1st Class Computers Science Main Parts of Computer Central Processing Unit

       CPU    

We use our brain to think and act. Computer also needs a brain to act.... (See Figure 1.2.8) The brain of the computer is called CPU. The CPU looks like a box. CPU stands for Central Processing Unit. The CPU has an ON/OFF switch and some other buttons on it. Some other parts of the computer are the speakers, printer, scanner, UPS and the joystick.

• Every interfacing device is connected with the central processing unit.
• Everything on the screen of computer is controlled by the input devices.
• Computer displays the information on the screen after calculating the input signals whatever we give in the form of instructions.  

• Pointer: A figure made by the mouse on the screen of computer is called pointer    

• The main parts of a computer are CPU, keyboard, mouse and monitor.
• Mouse is connected to computer with or without cable.
• Cursor moves on the screen according to the dragging of the mouse on mouse pad.  

Abbreviations

TV  - Television