7) Explain the structure of the computer ?
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- A computer is an electronic device capable of manipulating number and symbols, first taking input, processing it, storing and giving out output under a control of set instructions which is known as a program. A general purpose computer requires the following hardware components: memory, storage device (hard disk drive), input device (keyboard, mouse etc.), output device (screen, printer etc.) and central processing unit (CPU). Many other components are involved in addition to the listed components to work together efficiently.
Answer:
A computer is an electronic device capable of manipulating number and symbols, first taking input, processing it, storing and giving out output under a control of set instructions which is known as a program. A general purpose computer requires the following hardware components: memory, storage device (hard disk drive), input device (keyboard, mouse etc.), output device (screen, printer etc.) and central processing unit (CPU). Many other components are involved in addition to the listed components to work together efficiently.
Computers can be classified by size and power as follows:
Personal computer: Personal computers are small computers based on a microprocessor. A personal computer has a keyboard for inputting data, a monitor for output and a storage device for saving data.
Workstation: workstations are usually powerful than a personal computer. It has more powerful microprocessor and a higher-quality monitor.
Minicomputer: Mini computers are multi-user computer capable of supporting from 10 to hundreds of users simultaneously.
Mainframe computer: Mainframe computers are powerful multi-user computer capable of supporting many hundreds or thousands of users simultaneously.
Super computer: Super computers are extremely fast computers that can perform hundreds of millions of instructions per second....
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