Central Processing Unit (CPU) and system unit
Sometimes people erroneously refer the system unit as Central Processing Unit but these are two different things. A computer system unit is the case with motherboard and all the other parts while CPU is the central processing unit, a chip on the motherboard that does all the processing.
The CPU (central processing unit) chip is installed in a slot on motherboard which is placed inside the casing of system of the unit.
System Unit
A system Unit is a box or case that contains motherboard and other important component of system. Such as Hard Disk, CD(Compact discs)or DVD (Digital Versatile Disc) Power supply etc.
System Unit is also called Computer casing, Housing, Box, or system tower.
CPU (Central Processing Unit)
Central Processing Unit is a chip that is attached to computer. It is a small size device that performs the overall function of computer. It is consider to be the brain of computer. Central Processing Unit is used for processing of computer. Central Processing Unit is the integral part of any computer system. It is the brain of computer system. Just like human brain which controls all the activities of human body, the Central Processing Unit controls all the operations of the computer. Central Processing Unit is connected to all parts of computer. Central Processing Unit not execute instructions but also controls the storage of data, input output activates and functions of different devices attached. Central Processing Unit is also called microprocessor or processor.
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| System Unit with other important components |
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