unit 2- computer hardware. identify system components describe the role of the central processing...

Integrated Technology

Unit 2- Computer Hardware

Identify system components Describe the role of the central processing

unit Define computer memory Identify types of storage devices Care for storage media

Objectives

Box that contains components

Tower case

All-in-one

Case

Displays the images

LCD or LED◦ Very thin

CRT (old)◦ Very bulky

Monitor

Homework:

◦ Take a picture of your computer & monitor With you in the picture Bring in on your flash drive

◦ Is it a desktop or laptop?

◦ What kind of monitor do you have?

What Do You Have?

Motherboard Circuit board

Connects all components◦ Hard drive◦ Memory◦ CPU

Bus◦ Data transfer to components

How fast is your computer?- CPU

Processor or “Brain”

Reads/interprets instructions ◦ Performs calculations to complete

tasks

Speed= Gigahertz (GHz)◦ 2.2Ghz◦ 3GHz

1979= 8 MHz 1993= 200 MHz 2013= 3 GHz

How much memory ?- RAM Active programs/data are

held◦ Stores what you are creating◦ “Short-term memory”

Disappears when computer is off

Measured in bytes◦ Gigabytes (GB)◦ 4GB-8GB is standard now

Start, Control Panel, System

What Do You Have?

How does your computer

boot?- ROM BIOS or ROM

On motherboard

Has instructions to boot your computer◦ Read only- no store data

Info stays when power is off

Boot Process Power on the PC

ROM BIOS checked for location of OS◦ Usually on the hard drive

Loads OS from hard drive into RAM

OS Starts

You log in

Review What speed is a CPU measured in?

◦ GHz

Which memory holds your active, running programs or what you copied? ◦ RAM

Which type of monitor is shown?◦ CRT

Which memory goes away when power is off? ◦ RAM

What holds the computer’s boot instructions?◦ BIOS ROM

What is the brains of a computer?◦ CPU- what does it stand for?

The CPU, RAM, and ROM are all on what component?◦ Motherboard

Review

Storage Device- Hard Drive

Store data permanently◦ Long-term storage

GB or TB◦ 320GB◦ 1TB

Inside Case

External HD◦ USB

Storage Device- Optical

Optical uses a laser to read/write data

CD or DVD-ROM= Read Only CD or DVD-R= Record Once CD or DVD-RW= Rewritable

CD= 80 min./ 700MB DVD= 2 hrs./ 4.7GB BD= 4.5 hrs. of HD/ 25GB

Size Hard Drive:◦ Start, Computer,

right-click on C:

Type of Optical Drive:◦ Take a picture of front

What Do You Have?

No moving parts inside

SSD HD◦ In thin laptops

Memory Cards◦ SD, SDHC, microSD, CF,

Memory Stick

USB Flash drive

Storage Device- SSD

Storage Device- Floppy Disks

8-inch 5 ¼” 3 ½”

Magnetic Storage- 3.5”=1.44MB

Keep magnetic devices away from TV’s & monitors◦ Have magnetic fields; may erase

Avoid extreme temps◦ Like in a car

Hold optical media by edges

Keep discs in sturdy case

Caring for Storage Media

Types of Computers Project

In groups of 2, make a poster…◦ Title of device◦ Big picture of device◦ It’s use & where it’s used◦ Cost ($, $$, $$$, $$$$)◦ Special Features

Desktop Laptop/Notebook Netbook Tablet Workstation Servers Smartphone GPS Music/Media Player Game System E-Book Reader

Review T/F. Hard drives are used to temporarily store what

you are creating.◦ False

Which removable storage would you use to copy pictures from one PC to another? Flash Drive, Memory Card, Floppy, or Ext. HD◦ Flash, Mem Card, or Ext HD

Which optical storage would be used to store music and then later erased to store photos?◦ CD-RW

How much data can a Blu-Ray DVD hold?◦ 25GB

If pictures are about 3MB each, how many pictures could you put on that disc?◦ About 8300!

Which storage device has no moveable parts?◦ SSD/Flash

Review

Review 2

Integrated Technology

Unit 2- Computer Hardware