Chapter 3: CPU and Mouse & Additional Devices

CPU

●    CPU stands for the Central Processing Unit.        
●    CPU is called the brain of the computer.
●    It helps a computer to think and do all its work.
●    It has a large memory which helps to remember and store things.

Mouse

●    A mouse is a pointing device.
●    It helps us to play games, and draw pictures on the monitor.
●    It also helps us to point, click and select objects on the screen.
●    It has 2 or 3 buttons on it.
●    It has a scroll wheel in between the buttons.

Additional Devices of a Computer

Few additional devices are also attached to the computer to do extra work are called as peripheral devices.Ex-    Printer, Headset, web camera,scanner,

Quick recap
●    Additional parts attached to the computer to do additional work are called peripheral devices.Ex- Printer, Headset, web camera,scanner,etc.