Computer Hardware 1
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Transcript of Computer Hardware 1
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Computer Hardware
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Computer
An electronic device that is programmed to receive data, change the data to information, present the information and store the information
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Computer System
A computer and all the devices connected to it.
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Categories of Computers
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Microcomputer Small des ktop s ize 10,000Priced under $ — , Home computers word proces s ing
, education Internet us e — Pers onal Computers us ed in
/ bus ines s can us e many input output, devices communicate with larger
computers — Portable computers s imilar to home
computers but lightweight and, compact battery operated
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MinicomputerMore powerful than
microcomputerCan support a large
number of users performing different tasks
Cost from $25,000 to several $100,000
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Main FrameProcess
transactions at a very high rate
Can handle numerous users
Store large amounts of data
Priced from several $100,000 to several million
Requires specialized environment
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Super Computers
The largest most powerful computers
Represents the most advanced technology
Used by military, NASA and others
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Factors in Classification of Computers
PriceSize SpeedProcessing Capabilities
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Computer Program
Set of commandsList of instructions that “tells” computer
what to do.Written in special languagesAllows computer to change data into
information.
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DATA
Raw facts entered into the computer
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Information
Result of data processing
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