Page 12 - KEC Khaitan C3 Flipbook
P. 12
Mouse: A mouse is an input device. We can send instructions to the
computer by clicking on its buttons. It is also used to select objects and
draw pictures on the screen.
Mouse
Joystick: A joystick is an input device used for playing games.
Joystick
Webcam: A webcam is an input device used to capture pictures or
videos in digital form.
Webcam
Microphone: A microphone is an input device used to record voice,
music and other sounds on a computer. Microphone
Light pen: A light pen is an input device used
to point or draw on the screen.
Light Pen
Scanner: A scanner is an input device that reads text or images
and sends their copies to the computer.
Scanner
PROCESSING DEVICE
The device which is used to process the input data is called a processing device. In
a computer system, the Central Processing Unit (CPU) works as a processing
device. It controls the entire working of the computer system.
The parts of the CPU are:
Arithmetic Logic Unit (ALU): It performs all the arithmetic
operations such as addition, subtraction, multiplication,
division and all the logical operations such as greater
than, less than, equal to, etc. CPU Box CPU
Control Unit (CU): It controls the working of all the parts of a computer. It
acts like a supervisor and is used to control the flow of information from the
CPU to other parts of the computer and vice-versa.
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