FrienDs Why..We cAll system Unit To CPU..
Realy its Name System Unit Because it Contains (Storage+accesories+processing units) While CPU Stand For Central processing Unit..So its only Process While So its Our Right To Call Him SYSTEM Unit instead of CPU..

Technically you are correct.

In the past people that did not understand much about computers thought that the monitor was the computer. So, for example, when some where told to restart their computer, or told to turn it off, they would only turn off the monitor. To help people like this, some decided to call the System Unit the CPU, because that is where the CPU is, that is where the electronic "brainwork" takes place. Doing this made it easier for inexperienced users to see the difference between the display and the system unit, and made it easier for technical support to guide the user.

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