What are the main components of a computer system?

What are the main components of a computer system?
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Monitor,cpu,  key board mouse printer speaker
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CPU, keyboard, mouse, monitor
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Monitor CPU mouse keyboard scanner printer

4 Answers

Answer :

Keyboard. Mouse  .CPU .monitor . speakers . joystick etc..
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Answer :

Motherboards, hard disk
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Answer :

Monitor kyeborad CPU scanner printer 
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Answer :

CPU,monitor, keyboard and mouse
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