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Joystick
Joystick is a pointing device which is used to control the
movement of a pointer on your computer screen. It is mostly
used device to play games on the computer.
Joystick
Microphone
It is an input device that is used to record voice, music and sound
into the computer system.
Microphone
Touchscreen
A touchscreen is a screen sensitive to touch. We can interact
with a computer by touching areas on the screen. Tablets,
smartphones, ATMs have touchscreen.
PROCESSING DEVICE Touchscreen
Processing is done on the data entered into the computer, to convert it into
meaningful information through a processor with the help of a CPU.
CPU
CPU (Central Processing Unit) is a processor, sometimes called a microprocessor. It
is the brain of the computer that does all the calculations, and runs all the programs.
It manages all the operations and carries out the basic instructions which operate a
computer. The three main components of CPU are:
Memory Unit
Control Unit
ALU
CPU
CPU box Functioning of CPU
ALU (Arithmetic Logic Unit): Performs mathematical and logical operations.
CU (Control Unit): Directs all the operations of a processor.
Memory Unit: Stores data and instructions.
Fundamentals of a Computer 11

