Input
The devices used to give the computer data or commands are called input devices. like keyboard, mouse scanner etc.
Processor
A processor is the logic circuitry that responds to and processes the basic instructions that drive a computer. The term processor has generally replaced the term central processing unit (CPU).
Memory
Memory is the Electronic holding place for instructions and data that your computer's microprocessor can reach quickly. When your computer is in normal operation, its memory usually contains the main parts of the operating system and some or all of the application programs and related data that are being used.
Storage
Computer Storage is the holding of data in an electromagnetic form for access by a computer processor. It is also called secondary storage. In secondary storage data resides on hard disks. tapes, and other external devices.
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