1. BASICS OF COMPUTERS

8. BLOCK DIAGRAM OF
COMPUTER

11. INPUT DEVICES
• If you want to draw pictures, type a
letter or listen to music, you need to
give some instructions to computer.
• It is done with input devices.
• These set of instructions is called input.

12. OUTPUT DEVICES
• Output is the result given by a
computer after processing the data or
instruction given to the computer.
Output can be in the form of text,
picture, images and sounds.

13. STORAGE DEVICES
• When you draw a picture or record a
sound, it can be used even after many
days or months. It is because, you can
save the data in computer’s storage
devices or external storage devices.

14. TYPES OF COMPUTER :

15. USES OF COMPUTER :
• Computers are used in smart
classrooms where we use smart boards
and interactive boards.

16. • Computers are used
in saving videos and
images from Closed
Circuit TV (CCTV)

17. • The financial transactions in the bank
are done through computers. They
provide security, speed and
convenience.

18. • We can take online exams and get
instant results.

19. • We use computers in Automated Teller
Machine (ATM)

20. • Robots are controlled by computer
software.