Hope it help you...

3. What is computer made up of?
A computer is made from different
parts . These parts work together to
do specific task . These part are called
“devices”.

4. Parts of computer…
There are 3 types of :-
1)Input Devices
2)Output Devices
3)Storage Devices

5. About Input Device….
• An input device is a piece of equipment
used to provide data and control signals
to an information processing system
such as a computer or information
appliance. Examples of input
devices include keyboards, mouse,
scanners, digital cameras, joysticks, and
microphones.

6. • An output device is any piece of computer
hardware equipment which converts
information into human-readable form. It can
be text, graphics, tactile, audio, and video.
Some of the output devices are Visual Display
Units (VDU) i.e. a Monitor, Printer,
Graphic Output devices, Plotters, Speakers
etc.
About Output Device…

7. About Storage Device….
• A storage device is a piece of computer
hardware used for saving, carrying and
pulling out data. It can keep and retain
information short-term or long-term.
It can be a device inside or outside a
computer or server. Other terms
for storage device is storage medium
or storage media.

8. What is Processing Device?
• A processing device is any device in a
computer that handles the intermediate
stage of processing the incoming data.
For example, in the diagram below, the
CPU is the processing device

9. What is System unit?
• The system unit, also known as a "tower" or
"chassis," is the main part of a desktop computer.
It includes the motherboard, CPU, RAM, and other
components. ... The term "system unit" is often
used to differentiate between the computer and
peripheral devices, such as the monitor, keyboard,
and mouse.