1. The document describes the main components of a computer system: the input unit, central processing unit, output unit, and memory unit. 2. The input unit includes common input devices like a keyboard, mouse, microphone, and webcam. The central processing unit contains the computer's processor. The output unit outputs information to devices like printers, monitors, and speakers. The memory unit stores information using components like RAM, hard disks, and ROM.

1. CAI

3. 4
1 Input Unit
2
Central Processing Unit
3 Output Unit
4 Memory
Unit

4. 1 Input Unit
Input Unit
Process Unit

6. Keyboard
PS 2
USB
USB

7. Mouse
Pointing
Device
PS 2
USB

8. SCANNER
Bar Code
3
1 flatbed scanner
2 Sheet-fed scanner
3

9. MICROPHONE

10. webcam
webcam Web
Camera

11. Timer

12. Alphabet Buttons Appear Here

13. 2
Central Processing Unit
Input Unit

14. CPU Central Processing
Units

15. 30

16. 3 Output
Unit
2
-
Printer
Plotter
-
Monitor , LCD
Projector Speaker

17. -
Printer
Plotter

18. -
Monitor , LCD
Projector Speaker

19. 4 Memory
Unit
2

20. -
RAM Random Access
Memory

21. -
Hard Disk
ROM Read Only
Memory

22. HARDDISK
MONITOR
MOUSE
DISKETTE

23. <Scoreboard will appear here, leave shape as-is.>