The term hardware refers to the physical components forming the computer which are nothing but input, output, storage and processing units and additional accessories such as system unit, mouse, keyboard, monitor, disk drives etc.

Computer hardware comes in two basic types: (1) External  (2) Internal

External :
It refers to hardware that connects to the outside of the computer case. For an example monitor, keyboard, and mouse are the common external hardware devices. The speakers and printer are also external hardware components.

Internal :
It refers to hardware that inside the computer case. For an example: Central Processing Unit (CPU), RAM, Disk drives, and Mother Board are internal hardware components.


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