The Components of a Computer
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What is an input device?
>Hardware used to enter data and instructions
What is an output device?
>Hardware that conveys information to one or more people
What is the system unit?
>Case that contains the electronic components of the computer that are used to process data
What are two main components on the motherboard?
•Processor
>Also called a Central Processing Unit (CPU)
>The electronic component that interprets and carries
out the basic instructions that operate the computer
•Memory
>consists of electronic components that store instructions waiting to be executed and data needed by those instructions
What is storage?
>Holds data, instructions, and information for future use
•Storage media
>Physical material on which data, instructions, and information are stored•Stored device
>Records and retrieve items to and from storage media
What is USB flash drive?
>Portable storage device
>Small and lightweight enough to be transported on a key chain or in a pocket
>The average USB flash drive can hold about 2 billion characters
What is a hard disk?
>Provides greater storage capacity than a USB flash drive
>Most are housed inside the system unit
What is a compact disc?
>Flat, round, portable metal disc
•CD
•DVD
What is a communication device?
>Hardware component that enables a computer to send and receive data, instructions, and information
>Occurs over cables, telephone lines, cellular radio networks, satellites, and other transmission media