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Intermediate 1 Computing Studies
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Unit List
1. Computer Applications
2. Multimedia Applications
3. Computers & The Internet
4. Exam Preparation
5. Coursework Preparation
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Intermediate 1 Computing Studies
• 3 Units
Computer Applications
Multimedia Applications
Computers and the Internet
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Intermediate 1 Computing Studies
• Computer Applications: - Computer Software - Word Processing - Databases - Spreadsheets - Bit mapped (PAINT) Graphics - Vector (Draw) Graphics
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Intermediate 1 Computing Studies
• Multimedia Applications: - Hardware Factors - Features of Multimedia Software: Presentation Software DTP Software Multimedia Authoring Software
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Intermediate 1 Computing Studies
• Computers and the Internet - Computer Hardware - Computer Software - The Internet - Web Authoring - Software Development process creating a simple
website.
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Intermediate 1 Computing Studies
• You will be required to:
- Sit 1 Theory NAB per unit
- Submit practical work for evidence
- Sit an End of Unit test x3
- Coursework
- Exam
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Computer Applications
• What is Computer Software:
- The programs that can run on a computer.
2 types:
i) Applications Software
ii) System Software
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Computer Applications
• Systems Software = Operating System
Used to receive signals from peripherals
Send correct signals to peripherals
Store documents on Disk
e.g. Windows XP, Vista, MacOS X
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Computer Applications
• Applications Software • Designed to perform specific tasks: Write letters (Word Processing) Perform Calculations (Spreadsheets) Store and Organise Information (Database) Draw Pictures (Vector ‘Drawing’ ) Play Games
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Computer Applications
Exercise 1 from Notes
p.6 - 7
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Computer Applications
• Computer Hardware
• Variety of:
1. Input
2. Output
3. Backing Storage Devices
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Computer Applications
• Computer Harware: INPUT DEVICES 1. Mouse 2. Keyboard 3. Touchpad 4. Graphics Tablet 5. Scanner 6. Digital Camera READ P.8 - 9 of LTS Notes
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Computer Applications
Computer Hardware: OUTPUT DEVICES
1. Laser Printer & Inkjet Printer
2. ( TFT & CRT)
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Computer Applications
• Computer Hardware: BACKING STORAGE
1. Floppy Disk 2. Hard Disk 3. CD ROM / CD-R / CD-RW / DVD 4. USB Flash Drive
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Homework
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•Computer Applications
•HOMEWORK 1
•(Use slides and LTS notes to hep you answer the questions)
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Computer Applications IN PAIRS: Create a Mindmap for all 3 types of Computer Hardware
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OUTPUT DEVICE
CRT Monitor
Inkjet Printer
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Computer Applications
• How do computers work? • Computers work on electricity. • Electricity in a computer can either be ON or
OFF. • ON has the value of 1 • OFF has the value of 0 • All information used by a computer must be
stored as a pattern of 1’s and 0’s
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Computer Applications
• How do computers work? Each 1 or 0 is called a Binary Digit or BIT Bit – 1 or 0 Byte = 8 bits Kilobyte (Kb) = 1024 bytes Megabyte (Mb) = 1024 Kilobytes Gigabyte (Gb) = 1024 Megabytes Terabyte (Tb) = 1024 Gigabytes
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Computer Applications
• How do computers work? • OPERATING SYSTEM: Controls and monitors any devices that are
attached to the computer system. E.G. – If you log on to the network in school and
enter your user ID and password then this is controlled by the Operating System.
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Computer Applications
• How do computers work? PROCESSOR The ‘Brain’ of the computer Usually measured in Megahertz (MHz) or
Gigahertz (GHz) Deals with all the computer instructions.
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Computer Applications
• How do computers work?
MEMORY
2 Types – RAM & ROM
RAM – Random Access Memory (Read From and Write To)
ROM – Read Only Memory (cannot write to this)
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Computer Applications
• How do computers work? RAM Used to store programs and data that is
loaded from Backing Storage or received from an Input Device.
RAM clears when the power is switched off. This is why we used Backing Storage.
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Computer Applications
• How do computers work? ROM The computer cannot add data to ROM. The computer can only read the data. Certain important programs are stored here. The programs are built into the ROM chip
when it is made.
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Computer Applications
• MEMORY Vs BACKING STORAGE Memory (RAM): used to store programs and
data when the computer is switched on. Backing Storage: is where all the programs and
data files are stored when the computer is not using them and when the computer is switched off.
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Computer Applications
• How do computers work?
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MAIN MEMORY (RAM & ROM)
BACKING STORAGE DEVICES Floppy Disk Drive Hard Disk Drive USB Flash Drive
CD-ROM/ DVD-ROM Drive
INPUT DEVICES Mouse, Keyboard, Graphics Tablet,
Touchpad, Scanner, Digital Camera
OUTPUT DEVICES Printer – Inkjet & Laser
Monitor (VDU) – TFT or CRT PROCESSOR
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Computer Applications
Exercise 2 from Notes
p.15 - 16
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Homework
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•Computer Applications
•HOMEWORK 2
•(Use slides and LTS notes to hep you answer the questions)
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Computer Applications
• Getting Help:
Online Help: an information screen that is available when you are using an application program (MS Word etc)
Online Tutorial: A set of step by step lessons stored on the computer that teaches you the features of the application package.
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Create a Glossary of Terms using the following words: Software Hardware Application Software Systems Software / Operating System Input Device Output Device Backing Storage Memory (RAM & ROM) Processor Online Help Online Tutorial
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USE P.1 – P.17 OF LTS NOTES TO HELP AS WELL AS YOUR COPY OF THE POWERPOINT SLIDES.
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Computer Applications
• WORD PROCESSING SOFTWARE
With WP software you can:
• Edit Text (Insert, Amend, Delete)
• Format Text (Font, Size, Style, Colour, etc)
• Format Pages (Header/Footer, Tabs, Margins, etc)
• Add Graphics (Clip Art, Photo, etc)
• Wrap text to added object
• Cut, Copy, and Paste
• Search and Replace (Find & Change)
• Spell Check
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Workbook
• Exercise 3 and 4
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Workbook
• Exercise 5 and 6 + review terms
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Workbook
• Exercise 7 and 8 + review terms
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Computer Applications
• Word Processing: ADVANTAGES & DISADVANTAGES
• Spell Checker ---- Limitations
• Enter Text
• Delete Text
• Undo
• Change Font
• Change Size
• Change Style
• Clip Art
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Computer Applications
• Word Processing: Home and Work uses
• HOME: Letters, Computing Homework, etc
• WORK: Letters, Business Contracts, etc
• Question: List some advantages and disadvantages of computerised Spreadsheets.
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Computer Applications
• ALTERNATIVES
Handwriting Recognition
Optical Character Recognition
Voice Recognition
Touch Sensitive Screen
READ PAGES 36-37 OF LTS NOTE FOR MORE INFORMATION THEN DISCUSSION
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Computer Applications
Exercises 9 from Notes
p.38-39
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Introduction to Spreadsheets
• In this topic you will learn about
•
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Computer Applications
• SPREADSHEET SOFTWARE
With SS software you can:
• Use cell addresses/references to perform calculations.
• Edit Data – numbers, text, formulae (insert, amend, delete)
• Copy formulae (Fill Down & Fill Right)
• Insert and Delete Columns & Rows
• Create basic arithmetic functions (+, -, *, /)
• Use SUM and AVERAGE functions
• Sort data on 1 column
• Format cells – Currency £, Change Row Height, Change Column Width
• Create simple charts and graphs.
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Computer Applications • SPREADSHEET SOFTWARE
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ROW
COLUMN
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Computer Applications
• SPREADSHEET SOFTWARE
With SS software you can:
• Use cell addresses/references to perform calculations.
• Edit Data – numbers, text, formulae (insert, amend, delete)
• Copy formulae (Fill Down & Fill Right)
• Insert and Delete Columns & Rows
• Create basic arithmetic functions (+, -, *, /)
• Use SUM and AVERAGE functions
• Sort data on 1 column
• Format cells – Currency £, Change Row Height, Change Column Width
• Create simple charts and graphs.
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Computer Applications
• Spreadsheet Software: Home and Work uses
• HOME: Club Register, Personal Banking etc
• WORK: Tax calculations, staff registers etc
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Computer Applications
• SPREADSHEET SOFTWARE
With SS software you can:
• Use cell addresses/references to perform calculations.
• Edit Data – numbers, text, formulae (insert, amend, delete)
• Copy formulae (Fill Down & Fill Right)
• Insert and Delete Columns & Rows
• Create basic arithmetic functions (+, -, *, /)
• Use SUM and AVERAGE functions
• Sort data on 1 column
• Format cells – Currency £, Change Row Height, Change Column Width
• Create simple charts and graphs.
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Question
•
• What are the advantages of electronic spreadsheets over the traditional manual methods?
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Computer Applications
Exercise 10 and 11
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REVIEW P.41 – 42 OF LTS COMPUTER APPS NOTES
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Homework
March 2009 Nairn Academy Intermediate 1 47
•Computer Applications
•HOMEWORK 3
•(Use slides and LTS notes to hep you answer the questions)
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Computer Applications
• SPREADSHEET SOFTWARE
With SS software you can:
• Use cell addresses/references to perform calculations.
• Edit Data – numbers, text, formulae (insert, amend, delete)
• Copy formulae (Fill Down & Fill Right)
• Insert and Delete Columns & Rows
• Create basic arithmetic functions (+, -, *, /)
• Use SUM and AVERAGE functions
• Sort data on 1 column
• Format cells – Currency £, Change Row Height, Change Column Width
• Create simple charts and graphs.
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Computer Applications
Exercise 12 and 13
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REVIEW P.41 – 42 OF LTS COMPUTER APPS NOTES
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Get ready to take notes!!!
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Computer Applications
• SPREADSHEET SOFTWARE
With SS software you can:
• Use cell addresses/references to perform calculations.
• Edit Data – numbers, text, formulae (insert, amend, delete)
• Copy formulae (Fill Down & Fill Right)
• Insert and Delete Columns & Rows
• Create basic arithmetic functions (+, -, *, /)
• Use SUM and AVERAGE functions
• Sort data on 1 column
• Format cells – Currency £, Change Row Height, Change Column Width
• Create simple charts and graphs.
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Computer Applications
Exercise 14 – 16
Upload all files to online storage
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REVIEW P.41 – 42 OF LTS COMPUTER APPS NOTES
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Teacher preparation
• Assign - Computer Applications - Spreadsheets - End of Topic Test
S.Caddell / Nairn Academy / S1 ICT
/ Unit 2 53
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Pupil instructions
• Come in and sit at your normal seat
• Log on to the school network
• Turn and face the front of the room ready to take notes
• Listen closely
S.Caddell / Nairn Academy / S1 ICT
/ Unit 2 54
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What are we going to cover?
• Aims and Objectives:
Review all the theory learned to date: Spreadsheet topic only
Test our knowledge of Spreadsheet theory learned to date
S.Caddell / Nairn Academy / S1 ICT
/ Unit 2 55
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Computer Applications SPREADSHEET SOFTWARE With Spreadsheet software you can: • Use cell addresses/references to perform calculations.
• Edit Data – numbers, text, formulae (insert, amend, delete)
• Copy formulae (Fill Down & Fill Right) • Insert and Delete Columns & Rows
• Create basic arithmetic functions (+, -, *, /)
• Use SUM and AVERAGE functions • Sort data on 1 column
• Format cells – Currency £, Change Row Height, Change Column Width
• Create simple charts and graphs.
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End of Unit Test
• www.classmarker.com
• Computer Applications - Spreadsheets - End of Topic Test
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What do we do now?
• Get all our Practical Evidence together
• Keep studying and practicing
• Use the resources available:
• PowerPoint slides – www.hitcomp.net
• Review past www.classmarker.com questions and answers
• Try some of the www.quiz.hitcomp.net quizzes
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What have we covered today?
• Aims and Objectives:
Review all the theory learned to date: Spreadsheet topic only
Test our knowledge of Spreadsheet theory learned to date
S.Caddell / Nairn Academy / S1 ICT
/ Unit 2 59
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Teacher preparation
Check that Database package is working
Check the quiz links
Add homework check to planner for next lesson
S.Caddell / Nairn Academy / S1 ICT
/ Unit 2 60
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Pupil instructions
• Come in and sit at your normal seat
• Log on to the school network
• Turn and face the front of the room ready to take notes
• Listen closely
S.Caddell / Nairn Academy / S1 ICT
/ Unit 2 61
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What are we going to cover?
• Aims and Objectives:
Develop an understanding of the term: DATABASE
Distinguish the difference between a SPREADSHEET and DATABASE
Develop a basic understanding of some of the theoretical terms relating to DATABASES
Develop an awareness of home and work related uses for DATABASE packages
S.Caddell / Nairn Academy / S1 ICT
/ Unit 2 62
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Computer Applications
DATABASE SOFTWARE
With DB software you can:
• Design a Database (Choosing suitable field names)
• Design a Database (Choosing suitable field types; number, date, time,)
• Create a new Database
• Edit an Existing Database (insert, amend, delete records/fields)
• Sort on a single/multiple field
• Search on a single/multiple field
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Computer Applications
Database Software: key terms
FIELD – A single item of data stored in a record.
FIELD TYPE – Determines the type of data that must be entered: Number, Text, Date, Graphics, etc
RECORD – A data structure with one or more fields of information. FILE – Information held on backing storage or in memory.
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Exercise
Try the following quizzes:
• http://dotatmac.mcmaster.ca/db_basics/db_10_quiz.htm
• http://www.teach-ict.com/gcse/software/db/starters_plenaries/gcsedatayesno.htm
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Questions
Copy the following questions:
Information held on backing storage or in memory is stored as a?
A single item of data stored in a record is called a?
A data structure with one or more fields of information is called a?
What determines the type of data that must be entered: Number, Text, Date, Graphics, etc?
Answer the following questions in your project/notebooks.
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Computer Applications
Database Software: Home and Work uses
HOME: Storing family/friends addresses etc
WORK: Storing customer information etc
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Homework
DURATION: 10-15 mins
DUE: next lesson
Go home and write up a list of all the home and work uses of database software you can think of. Have this ready for the next lesson.
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What have we covered today?
• Aims and Objectives:
Developed an understanding of the term: DATABASE
Discussed the difference between a SPREADSHEET and DATABASE
Developed a basic understanding of some of the theoretical terms relating to DATABASES
Developed an awareness of home and work related uses for DATABASE packages
S.Caddell / Nairn Academy / S1 ICT
/ Unit 2 69
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Computer Applications
• Databases:
ADVANTAGES & DISADVANTAGES????
March 2009 Nairn Academy Intermediate 1 70
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Computer Applications
Exercises 17-18
March 2009 Nairn Academy Intermediate 1 71
REVIEW P.61-63 OF LTS COMPUTER APPS NOTES
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Computer Applications
Exercises 19-21
March 2009 Nairn Academy Intermediate 1 72
REVIEW P.61-63 OF LTS COMPUTER APPS NOTES
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Computer Applications
Exercises 22-23
March 2009 Nairn Academy Intermediate 1 73
REVIEW P.61-63 OF LTS COMPUTER APPS NOTES
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Computer Applications
• Database Software: Home and Work uses
• FIELD – A single item of data stored in a record. • FIELD TYPE – Determines the type of data that must be entered: Number, Text,
Date, Graphics, etc • RECORD – A data structure with one or more fields of
information. • FILE – Information held on backing storage or in memory.
March 2009 Nairn Academy Intermediate 1 74
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Computer Applications
• GRAPHICS SOFTWARE
• 2 Types:
Drawing (Vector Graphics)
Painting (Bitmap Graphics)
March 2009 Nairn Academy Intermediate 1 75
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Computer Applications
• GRAPHICS SOFTWARE
• With DRAWING software you can:
- Create pictures & shapes
- Make changes to a picture
- Move, copy, resize part of a picture
March 2009 Nairn Academy Intermediate 1 76
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Computer Applications
• GRAPHICS SOFTWARE • DRAWING Tools • Straight Line • Rectangle • Ellipse • Freehand • Text • Library of shapes • Zoom/Magnify
See P.73 of LTS notes to familiarise yourself with the above notes
March 2009 Nairn Academy Intermediate 1 77
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Computer Applications
• GRAPHICS SOFTWARE • DRAWING Editing Tools
• Select objects • Width of line • Line Colour • Fill Colour See P.73 of LTS notes to familiarise yourself with the
above notes March 2009 Nairn Academy Intermediate 1 78
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Computer Applications
Exercises 24-26
March 2009 Nairn Academy Intermediate 1 79
REVIEW P.73 OF LTS COMPUTER APPS NOTES
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Computer Applications
Exercises 27
March 2009 Nairn Academy Intermediate 1 80
REVIEW P.73 OF LTS COMPUTER APPS NOTES
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Computer Applications
• GRAPHICS SOFTWARE • DRAWING Editing Tools
• Select objects • Width of line • Line Colour • Fill Colour See P.73 of LTS notes to familiarise yourself with the
above notes March 2009 Nairn Academy Intermediate 1 81
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Computer Applications
Exercises 28
March 2009 Nairn Academy Intermediate 1 82
REVIEW P.73 OF LTS COMPUTER APPS NOTES
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Computer Applications
• GRAPHICS SOFTWARE • DRAWING Editing Tools
• Select objects • Width of line • Line Colour • Fill Colour See P.73 of LTS notes to familiarise yourself with the
above notes March 2009 Nairn Academy Intermediate 1 83
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Computer Applications
Exercises 28
March 2009 Nairn Academy Intermediate 1 84
REVIEW P.73 OF LTS COMPUTER APPS NOTES
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Computer Applications
• GRAPHICS SOFTWARE • DRAWING Editing Tools
• Select objects • Width of line • Line Colour • Fill Colour See P.73 of LTS notes to familiarise yourself with the
above notes March 2009 Nairn Academy Intermediate 1 85
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Computer Applications
Exercises 29
March 2009 Nairn Academy Intermediate 1 86
REVIEW P.73 OF LTS COMPUTER APPS NOTES
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Computer Applications
• GRAPHICS SOFTWARE • DRAWING Editing Tools
• Select objects • Width of line • Line Colour • Fill Colour See P.73 of LTS notes to familiarise yourself with the
above notes March 2009 Nairn Academy Intermediate 1 87
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Computer Applications
• GRAPHICS SOFTWARE
• With PAINTING SOFTWARE software you can:
- Create pictures & shapes
- Make changes to a picture
- Move, copy, resize part of a picture
March 2009 Nairn Academy Intermediate 1 88
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Computer Applications
• GRAPHICS SOFTWARE • PAINTING Tools • Straight Line • Rectangle • Ellipse • Textbox • Pencil – Thin Lines • Brush – Thick Lines • Zoom/Magnify
See P.85 of LTS notes to familiarise yourself with the above notes
March 2009 Nairn Academy Intermediate 1 89
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Computer Applications
• GRAPHICS SOFTWARE • PAINTING Editing Tools • Select part of a picture • Paint Pot (Fill) • Eraser • Width of Line • Line Colour • Fill Colour
See P.85 of LTS notes to familiarise yourself with the above notes
March 2009 Nairn Academy Intermediate 1 90
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Computer Applications
• Graphics Software: Home and Work uses
• TASK: Think up as many different ways to use Graphics software at home and in as many workplaces as you can. Put your answers down on a Graffiti sheet.
March 2009 Nairn Academy Intermediate 1 91
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Computer Applications
• Graphics Software: Mind Map
• TASK: Create a Mind Map for both types of Graphics software and then, by comparing the maps, list the differences between the 2.
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Homework
March 2009 Nairn Academy Intermediate 1 93
•Computer Applications
•HOMEWORK 4
•(Use slides and LTS notes to hep you answer the questions)
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Computer Applications
Exercises 30-32 from Notes
p.86-92
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REVIEW P.85 OF LTS COMPUTER APPS NOTES
SEE NEXT SLIDE
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NAB Revision
• Theory NAB Preparation
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NAB Revision
• Theory NAB – SQA Solar
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COMPUTER APPLICATIONS
• End of Unit Test • NAB Outcome 1 – Collect Practical
evidence • NAB Outcome 2 – Theory Test (Multiple Choice)
March 2009 Nairn Academy Intermediate 1 97
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UNIT 2
MULTIMEDIA APPLICATIONS
March 2009 Nairn Academy Intermediate 1 98
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Multimedia Applications
• What is Multimedia?
• Everything you see and hear
• Text, sound, graphics, animations
March 2009 Nairn Academy Intermediate 1 99
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Multimedia Applications
• Who uses Multimedia?
Education
Business
Leisure
March 2009 Nairn Academy Intermediate 1 100
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Multimedia Applications
EXERCISE 1 (use the Theory notes to assist you)
March 2009 Nairn Academy Intermediate 1 101
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Multimedia Applications
• A Multimedia Computer System Consists of: Input Devices Output Devices Memory Backing Storage Software
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Multimedia Applications
• Input Devices
Keyboard
Mouse
Scanner (w/OCR)
Microphone (w/Voice Recognition)
Graphics Tablet (w/Handwriting Recognition)
Digital Camera
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Multimedia Applications
• Optical Character Recognition
• Scan text directly into computer memory
• Once scanned, the user can edit the text
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Multimedia Applications
• Voice Recognition Software
• Spoken words are converted into computer text
• User must speak clearly and slowly
• Software has difficulty understanding strong accents
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Multimedia Applications
• Handwriting Recognition Software
• Allows the user to use his/her normal handwriting to add text into the computer
• Reads the shape of the writing and convert is
• Cannot read poorly written text
March 2009 Nairn Academy Intermediate 1 106
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Multimedia Applications
• Digital Camera
• Allows a user to add photographic images into the computer system
• Removable backing storage
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Multimedia Applications
• Resolution
• The amount of detail in an image
• Measured in Dots Per Inch (dpi)
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Multimedia Applications
• Digital Video Camera
• Used for taking movies and works in a similar way to Digital Cameras
• Requires a great deal of memory
March 2009 Nairn Academy Intermediate 1 109
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Multimedia Applications
EXERCISE 2 (use the Theory notes to assist you)
March 2009 Nairn Academy Intermediate 1 110
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Multimedia Applications
• Output Devices
Monitors
Speakers
Data Projectors
March 2009 Nairn Academy Intermediate 1 111
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Multimedia Applications
• Monitors
• 2 types:
• LCD (Modern, flat panel)
• CRT (Older, large body)
March 2009 Nairn Academy Intermediate 1 112
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Multimedia Applications
• LCD • Liquid Crystal Display • Light • Portable • Flat • Uses less power than CRT
March 2009 Nairn Academy Intermediate 1 113
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Multimedia Applications
• CRT • Cathode Ray Tube • Light beams hit the phosphorous inside the
screen making it glow • Not so portable • Uses more power than LCD technology
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Multimedia Applications
• Speakers
Use to output sound
Used especially in Multimedia Presentations
Extra loudspeakers can usually be added
Links in to the Sound Card
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Multimedia Applications
• Data Projector
Project output from the computer on to a large white screen
Allows large audiences to view a presentation
Works with a Graphics Card
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Multimedia Applications
• Graphics Card
• Provides good quality monitor output
• Large amounts of their own memory
• Monitors and Data Projectors plug into the Graphics Card
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Homework
March 2009 Nairn Academy Intermediate 1 118
•Multimedia Applications
•HOMEWORK 1
•(Use slides and LTS notes to hep you answer the questions)
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Multimedia Applications
EXERCISE 3 (use the Theory notes to assist you)
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Multimedia Applications
• Backing Storage
• Hard Disk
• Floppy Disk
• Compact Disk (CD)
• USB Flash Drive
• Digital Versatile Disk (DVD)
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Multimedia Applications
• Hard Disk
• Magnetic
• Large Storage Capacity (approx. 250GB)
• Ideal for storing large Multimedia Presentations with video and sound files
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Multimedia Applications
• Floppy Disk
• Older technology
• 1.44MB Storage Capacity
• Not suitable for Multimedia Files
March 2009 Nairn Academy Intermediate 1 122
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Multimedia Applications
• Compact Disks
• Optical Storage
• Portable
• Direct Access
March 2009 Nairn Academy Intermediate 1 123
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Multimedia Applications
• Compact Disks
• Large Storage Capacity (approx. 700MB)
• Useful for storing Multimedia
• Various types
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Multimedia Applications
• Compact Disks
CD-ROM
CD-RW
CD-R
See pages 15 & 16 of the Multimedia Theory notes for more information
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Multimedia Applications
• Digital Versatile Disks • Capacity from 4.7GB to 17GB • Portable • Optical • Useful for storing Multimedia
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Multimedia Applications
• Digital Versatile Disks
DVD
DVD-R
DVD-RW
March 2009 Nairn Academy Intermediate 1 127
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Multimedia Applications
• USB Flash Drives
Small Compact Memory Chip
264MB to 16GB
Portable
Can be re-written to many times
Use USB port on any computer
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Multimedia Applications
See table on p.17 for a run down of all the backing storage devices
mentioned
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Multimedia Applications
EXERCISE 4 (use the Theory notes to assist you)
March 2009 Nairn Academy Intermediate 1 130
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Multimedia Applications
• File Types
• Text File Types (.txt / .doc / .rtf)
• Graphics File Types (.bmp / .gif / .jpeg)
• Video File Types (.mpeg / .avi)
• Sound File Types (.wav / .mp3)
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Multimedia Applications
• File Types
• Reducing the amount of data to be stored
• Compression of data
• Smaller files = Faster downloads
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Multimedia Applications
• Text File Types
• .txt
• .doc – Microsoft Word
• .rtf – Saves files with formatting
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Multimedia Applications
• Graphics File Types
• .bmp – bitmap
• .gif – Graphics interchange File Format (Bitmap)
• .jpeg – Joint Photographic Experts Group
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Multimedia Applications
• File Compression - GIF
• Code used to store repeated patterns of data
• Bits are not stored individually
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Multimedia Applications
• File Compression - JPEG
• Reduces file size by approx. 80%
• Cuts out parts of a graphics that will not be seen by the human eye
• Little loss in picture quality
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Multimedia Applications
• Bitmapped Graphics Files
• Made up of a grid of PIXELS
• Pixel stored as a 1 or 0 (1 = black, 0=white)
• Memory requirements increase for coloured graphics
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Homework
March 2009 Nairn Academy Intermediate 1 138
•Multimedia Applications
•HOMEWORK 2
•(Use slides and LTS notes to hep you answer the questions)
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Multimedia Applications
• File Compression – Moving Images
• MPEG (.mpg)
• → Similar to JPEG compression
• → Cuts any unchanged data from the video frames
• → uncompressed when viewed
• AVI (.avi)
»→ Audio and video stored in single file
» → Limits the size of the file to be stored
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Multimedia Applications
• File Compression – Audio
• WAV (.wav)
• → compressed
• → still have fairly high storage requirement
• → works on all Windows computers and most browsers
• MP3 (.mp3)
»→ higher degree of compression
» → small storage requirements
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Multimedia Applications
• Copyright
• Law
• Many pictures and sound files cannot be used without the owners permission
• Some graphics and audio files are Copyright- free
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Multimedia Applications
EXERCISE 5 (use the Theory notes to assist you)
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Multimedia Applications
• Multimedia Software
• Presentation
• Multimedia Authoring
• Desktop Publishing (DTP)
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Multimedia Applications
• Presentation Software
• ex. Powerpoint
• Create Multimedia Presentations
• Slides
• Includes: text, graphics, sound
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Multimedia Applications • Templates
• Ready made blank documents
• Can be adapted to suit users needs
• Placeholders for text and graphics
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Multimedia Applications • Desktop Publishing Software
• ex. Microsoft Publisher, Scribus
• Create cards, newspapers, posters, etc
• Uses text and graphics
• Uses templates
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Homework
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•Multimedia Applications
•HOMEWORK 3
•(Use slides and LTS notes to hep you answer the questions)
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Multimedia Applications
Start of Section 2 Creating a Multimedia Presentation (1)
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Multimedia Applications • Computer Operations
• Save Files
• Printing
• Colours
• Text/Graphics Effects
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Multimedia Applications • Word Processing
• Enter and edit text using a keyboard
• You can • → Save and reload text
• → Alter size of text
• → Alter the style of text
• → Spell-check you document
• → Align text: left, right, centre
• → Search and Replace
• → Alter page layout
– → Change page orientation: landscape or portrait
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Multimedia Applications • Other methods of entering text
• Scanner & Optical Character Recognition software (OCR)
• Microphone and Voice Recognition Software
• Graphics Tablet and Handwriting Recognition Software
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Multimedia Applications • Word Processing
• Enter and edit text using a keyboard
• You can • → Save and reload text
• → Alter size of text
• → Alter the style of text
• → Spell-check you document
• → Align text: left, right, centre
• → Search and Replace
• → Alter page layout
– → Change page orientation: landscape or portrait
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Multimedia Applications
EXERCISE 6 (use the Theory notes to assist you)
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Multimedia Applications • Creating Still Images
• Still image – picture that does not move
• Bit-mapped (Paint) or Vector Graphics (Draw)
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Multimedia Applications • Vector Drawn Graphics
• Layering of objects:
• → Overlapping objects can be placed in front or behind other objects
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Multimedia Applications • Vector Drawn Graphics
• Scaling Objects without loss of quality
• →When an object is made bigger or smaller
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Multimedia Applications • Vector Drawn Graphics
• Rotating Objects
• → Object turned through a number of degrees
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Multimedia Applications • Vector Drawn Graphics
• Colouring of objects:
• → An object can be coloured
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Multimedia Applications • Vector Drawn Graphics
• Flipping of objects:
• → Can flip horizontally or vertically
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Multimedia Applications • Bit-mapped Drawn Graphics
• Can use all of the Vector Graphic features but can also be CROPPED
• Sometimes known as 'Clipping'
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Multimedia Applications
EXERCISE 7 (use the Theory notes to assist you)
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Multimedia Applications • Graphics can be taken from other sources:
• Scanner
• Clip Art
• Internet
• Digital Camera
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Homework
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•Multimedia Applications
•HOMEWORK 4
•(Use slides and LTS notes to hep you answer the questions)
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Multimedia Applications
EXERCISE 8 (use the Theory notes to assist you)
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Multimedia Applications
Start of Section 3 Creating a Multimedia Presentation (2)
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Multimedia Applications • PRACTICAL ASSIGNMENT
• 5 Steps:
• Choose Topic
• Design presentation on paper
• Gather Information
• Put presentation together
• Preview
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Multimedia Applications
From here use your pupil workbooks and Theory booklets to complete Section 3
(p.35 → 42)
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Multimedia Applications • PRACTICAL ASSIGNMENT
• Must include the 4 items that make up a presentation:
→ Text
→ Graphics
→ Sound
→ Video
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MULTIMEDIA APPLICATIONS
• End of Unit Test • NAB Outcome 1 – Collect Practical
evidence • NAB Outcome 2 – Theory Test (Multiple Choice)
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UNIT 3
Computers and The Internet
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Section 1
Computer Hardware
Unit 3: Computers and The Internet
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Computer Systems
• Desktop Computers
• Laptop Computers
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Desktop Computers
• PC (Personal Computer)
• Collection of different hardware devices
• Permanently on a desk so NOT Portable
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Desktop Computers
• Consists of:
System Unit
Monitor
Mouse and Keyboard
Printer
Speakers
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Desktop - Monitor
Desktop - Keyboard
Desktop - Mouse
Desktop – System Unit
Use arrow keys to animate
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System Unit
• Consists of:
Processor
Memory
Backing Storage Devices
Sound Cards
Graphics Cards
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System Unit
• Consists of:
Processor
Memory
Backing Storage Devices
Sound Cards
Graphics Cards
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Portable Computers
• Laptop – also called ‘Notebook’
• Commonly used in business
• Competition for Desktops?
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Laptop Computers
• Consists of:
Processor
Memory
Backing Storage
Trackpad, Touchball, or Trackpoint
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Laptop Computers
• Mouse can be attached
• Plug-in workstations
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Palmtop Computers
• Can be called PDA’s
• PDA = Personal Digital Assistant
• Download files from PC’s
• Organisers, Contact Lists, E-mail, etc
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Palmtop Computers
• Separate software now available
• Input of data
Touchscreens with Stylus
Mini-keyboards
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Palmtop Computers
• Limited Amount of Storage
• Limited Amount of Processing Power
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Questions
Exercise 1
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Components of a Computer
• Data Processing machines
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INPUT PROCESS OUTPUT
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Components of a Computer
• Data is input, processed, and output using the following components:
Input Devices Processor Memory Output Devices Backing Storage Devices
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Components of a Computer
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Central Processing Unit (CPU)
• Contains:
The Processor
Main Memory
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Size
•
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The Processor
• ‘Brain’ of the computer
• Hardware
• Works at speed measured in:
Hertz (Hz)
MegaHertz (MHz)
GigaHertz (GHz)
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Memory
• Random Access Memory (RAM)
• Read Only Memory (ROM)
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Memory
• Random Access Memory (RAM) Temporary storage area for holding: a) Instructions contained in programs b) To hold any data that has been input c) To ‘remember’ any changes it has made to them Data is lost when the power is switched off!
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Memory
• Read Only Memory (ROM) Permanent memory Does not lose data when the power is switched
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Memory
• Read Only Memory (ROM) Permanent memory Does not lose data when the power is switched off All computers must have some ROM Tells the computer what to do when it is switched on ROM cannot be written to!
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Memory
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Updated Computer System Diagram
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Size of Memory
• Computer represents data using just 2 numbers
• 1 and 0
• These are Binary Digits or bits
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Size of Memory
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Finding data in Memory
• Memory is made up of millions of storage locations
• Each location has its own unique address
• Address is simply one number
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Questions
Exercise 2
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Specification Tasks
Page 16 - 21
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Embedded computer systems
• Household devices each have computer processors
• Video recorders
• Washing Machines
• Microwave Ovens
• Etc……
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Embedded computer systems
• All will need some form of ROM
• ROM stores the processors instructions
• RAM may also be present if the device, like a HDD recorder, is programmable
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Network Systems
• A network is 2 or more computer systems connected together
• Commonly consist of:
Server
Clients
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Server
• Manages network resources
• File Servers control the programs that run on individual workstations
• File Servers also provide security so that users only get access to their own files when they log on to the networks
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Client
• Any computer that can access the network
• Also called WORKSTATIONS
• DUMB TERMINAL – an alternative type of client that relies on the server to work
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User names and Passwords
• Allows secure access to files
• Only the person with a password should have access to the information
• Passwords should always be kept private
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Advantages of networking
• Sharing data and programs
• Licensing software – discuss
• Sharing peripherals
• Communication
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Computer Networking Quiz
Classmarker.com
Intermediate 1 Computing Studies - Computers and The Internet - Networking
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Hardware Devices
• 3 categories:
Input Devices
Output Devices
Backing Storage Devices
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Input Devices
• Keyboard • Mouse • Trackball • Touchpad • Touch (sensitive) screen • Graphics (Digitising)Tablet • Microphone
• Electronic Whiteboard • Scanner • Scanning with OCR software • Web Cam • Digital Camera • Digital Video Camera • Joystick
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Input Devices Practical Tasks
Page 28
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Output Devices
• Monitor (TFT/CRT)
• Speakers
• Digital Projector
• Plotter
• Printer (Inkjet/Laser)
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Comparing Printers
• Set-up costs
• Running Costs
• Resolution
• Speed
• Noise
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Comparing Printers
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Output Devices – Questions and Practical
Page 33
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Backing Storage Devices
• 3 types:
Magnetic Drives
Optical Drives
Solid State (Flash) Drives
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Access Methods
• Random Access (Direct)
• Sequential Access (Serial)
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Random Access
• Accessing files straight away
• Do not have to ‘trawl’ through the entire list of stored data
• Examples = Hard Disk, SSD, CD, DVD, Blu-Ray
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Sequential Access
• User must run through all data until they find the data that they require
• Example = Magnetic Tape Drive
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Comparing Backing Storage Devices
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Backing Storage Task
Page 38
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Other Devices
• Motherboard • Graphics Tablet • Sound Card • Modem • Network Interface Card (NIC)
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Motherboard
• Links all computer components together
• Made up of electric components
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Graphics Card
• Produces the images you see on the screen
• Contain extra Memory
• Need to cope with high quality video output
• Connects to the Motherboard via PCI
interface
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Sound Card
• Takes sound input from Microphones
• Sends sound to speakers and headphones
• CD or DVD drives attached to allow sound output
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Modem
• Modulator/Demodulator
• Converts digital computer data into analogue telephone data
• Data is changed back in to digital signals by the modem at the other end of the line
• Most computers have a built-in modem
• External Modem
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Network Interface Card
• NIC – Network Interface Card
• Any computer on a network needs one of
these
• Allows connection to a LAN (Local Area Network)
• Wireless Network Interface Card (Wireless NIC)
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Section 2
Computer Software
Unit 3: Computers and The Internet
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Types of Software
• Invisible data that makes the computers work
• 2 types:
→ Program Files – lists of instructions and commands that tell the processor what to do
→ Data Files – Information created by, or needed by programs to work
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Program Files
• Systems Software – types include:
• → Operating System
• → Utility Software
• → Virus Checkers
• → Icon Editing Programs
• → Disk clean-up Programs
• Application Software – types include:
• → Word Processors
• → Spreadsheets
• → Desktop Publishing
• → etc.....
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Application Packages
• When you buy an application package you get:
• → CD or DVD with the software on it • → Software Licence • → User Guide • → Tutorial Guide • → Installation Guide
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Operating Systems Software
• Controls the computer
• Examples: Windows 2000, XP, Vista, etc
• Provides and Interface
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Interface
• The way the user interacts with the computer:
• → Takes in user commands • → Provides useful information to the user
• WIMP – Windows Icons Menus Pointer
• GUI – Graphical User Interface
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Operating Systems Software
• Manages Backing Storage
• Manages Memory
• Manages Input & Output
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Operating Systems Questions
Page 45
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Operating Systems Practical Task
Page 46-47
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Applications Software
• Word Processing Software (WP) • Desktop Publishing Software (DTP) • Web Authoring Software • Spreadsheet Software (SS) • Database Software (DB) • Communication Software • E-mail client • Web Browser
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Graphics Software
• Draw – work by creating shape objects
• Paint – programs change the colour of pixels
• Pixel: small dots that make up a picture
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Application Software Task
Page 50
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Program Specifications
• When purchasing a piece of software you need to consider:
• Drives • Backing Storage • Processor Speed • Amount of RAM • Operating System
• The hardware must match all the categories
otherwise the software will not work
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Compatibility Exercise
Page 53-58
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Section 3
Software Development Process
Unit 3: Computers and The Internet
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Software Development Process
• Sequence of stages used to develop a piece
of software
• Should be followed when attempting any computing task
• Ex. - Developing a website
• 6/7 stages
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Software Development Process
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Software Development Process
• Development process for creation of a website:
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Website Development Task
Teacher Led (use LTS notes)
P62 – 72
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Website Development Task
Pupil Task (see Practical NAB booklet)
P.73
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Section 4
Connecting to the Internet
Unit 3: Computers and The Internet
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Connecting to the Internet
• 5 requirements:
1) Service Provider 2) Software 3) Hardware 4) Connection 5) Modem
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Internet Service Provider (ISP)
• Companies which control access to the services of the Internet
• AOL, Yahoo, Tiscali, BT, Sky, etc....
• Provide access to the World Wide Web (WWW)
• E-mail, IM, connection information
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Communications Software
• Web Browser e.g. Internet Explorer, Mozilla Firefox
• E-mail Client e.g. Outlook, Eudora, etc
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Hardware
• Communications software will have a minimum specification it needs before it will run
• Example:
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Connection and Modems
• 3 different types:
• Dial-up: using a telephone line & standard modem
• ADSL Broadband: Using a digital modem and telephone line
• Broadband: Using Cable
• Satellite: This is another option
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Difference between types
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Connection and Modems
• 3 different types:
• Dial-up: using a telephone line & standard modem
• ADSL Broadband: Using a digital modem and telephone line
• Broadband: Using Cable
• Satellite: This is another option
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Internet Costs
• Hardware Costs:
• → Buying or upgrading a computer
• → Buying a modem (if required)
• → Buying Peripherals (if required)
• Software Costs
• → Upgrading Operating System (if required)
• → Buying browser and e-mail software (if required)
• → Buying anti-virus/firewall software
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Internet Costs
• Installation Costs
• → Setting up Internet Access
• → Installing or moving phone sockets
• → Installing Cable or Satellite equipment (if required)
• Training
• → Training staff to use new software#
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Internet Costs
• Running Costs
• → ISP Subscription (Pay as you go, Anytime Dial-up, etc)
• → Phone Line
• → Call Charges
• Other Charges
• → Maintenance and repairs of equipment
• → Technical Support Helplines
• → Software Updates
• → Hardware Updates
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Security Issues
• User ID's and Passwords
• Virus Checkers and Filters
• Firewalls – provide great levels of protection
• E-commerce
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Internet Questions & Practical Task
P.82
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COMPUTERS & THE INTERNET
• End of Unit Test • NAB Outcome 1 – Collect Practical
evidence • NAB Outcome 2 – Theory Test (Multiple Choice)
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Checklist
• The following should now be complete:
• → Personal Learning Plans up to date • → All NAB's for all units • → All practical evidence to be filed • → Coursework Completed • → Prelim Completed
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