ICT Lecture 2

1. Irfan Ali Memon

7. Basic operations
of a computer system
1. Input
2. Processing
3. Storage
4. Output

9. Components of a computer system
1. Hardware
2. Software
3. Data
4. Users

11. Motherboard

12. Input
devices

13. Processing
devices

14. Memory
devices
RAM:
Volatile memory
ROM:
Non-volatile
memory

15. Magnetic storage:
Hard disks
Storage
devices
IDE – Integrated
Drive Electronics
SCSI – Small Computer
Systems Interface
Non-volatile memory

16. Optical storage:
CD/ DVD
Storage
devices
Non-volatile memory

17. Output
devices

18. Communication
devices

19. Motherboard
Chipset and Expansion slots

29. System
Software

30. Application
Software

32. Can computers think?
Even the most powerful
supercomputers require
human interaction!
Why??

33. 1. Setting up the system
2. Installing software
3. Running programs
4. Managing files
5. Maintaining the system

34. “Userless” embedded computers

36. http://tinyurl.com/5hb8pp