four major components of the computing cycle taking in data processing the data storing it as...
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Four major components of Four major components of the computing cyclethe computing cycle
• Taking in data
• Processing the data
• Storing it as necessary
• Outputting the results to you
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Hardware and Software
• Hardware includes all of the computer components that are physical
• Touchable pieces, equipment
• Software is the term for programs that tell a computer how to accomplish a given task
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What is the difference between Memory and Storage?
• Memory – A series of RAM chips that provide temporary, volatile electronic storage that is used by the CPU to store short-term data.
• Storage - A nonvolatile, electronic space on a magnetic or optical disc that the computer can use to store information and data for use at a later time.
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The Role of the Operating System
• Gives special instructions on how to act like a computer
• A collection of programs that tell it how to function and how to manage its own operation
• Creates an interface between you and the machine
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3 Classes of Application Software
Utility Programs
Administrative Applications
Academic Applications
Improve or monitor
computer operations
Word processing and
grade book programs
Tutorials and electronic
encyclopedias
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CPUCentral Processing Unit
•Controls all operations of the computer
•Processes data
•Coordinates all components
•Higher the megahertz – more responsive the machine
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Input / Output devices
• Input = any peripheral used to enter data
Ex. Keyboard and mouse
• Output = pieces of hardware that move information out
Ex. Monitor and printer
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Monitor Resolution
• Resolution = clarity of image on screen
• Measured in pixels
• Measured vertically and horizontally
• Higher vertical number = crisper picture
BUY HIGH
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Printer Resolution
• Higher resolution = clearer text and graphics
• Measured in dpi (dots per inch)
HIGH DPI = CRISP TEXT AND GRAPHICS
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Do you have a VIRUS ???
• Program written to disrupt or destroy
• Transmitted by attaching to normal files
• Antivirus program should be installed on classroom computers
• Program updated monthly
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Storage Devices
• Hard disk
• Floppy disk
• Removable disk
• CD-ROM
• CD-R
• CD-RW
• DVD
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Questions