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What are the basic units or components of a computer

Following are the main basic units or components of the computer:

1. Input Unit

2. Output Unit

3. Central Processing Unit( CPU / Processor)

4. Memory Unit

5. Storage Unit


Diagram Showing Main Components or Basic Units of a Computer

Different Basic Units or fundamental components of a computer
Different Basic Units or fundamental components of a computer


Brief Description of Basic components of Computer

1. Input Unit

Input unit consists of input devices. Input devices are used to enter data and instructions into computer memory. Examples of input devices are Keyboard, mouse, joystick and microphone etc.

2. Output Unit

Output unit consists of output devices. Output devices are used to show results produced by computer after data processing. Examples of output devices are Monitor, Printer, plotter and  speaker etc.


3. Central Processing Unit


Central processing unit is also called CPU or Processor. It is the brain of the computer. It performs data processing. It controls overall operations and components of the computer.

4. Memory Unit


Memory unit consists of memory devices to store data . For Example RAM is most common example of memory.

5. Storage Unit


Storage unit consists of storage media. Storage media are used to store large amounts of data permanently. Examples of storage media are Hard disk, CD, DVD and Zip disk etc.

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