FOUNDATIONS OF Human computer interaction

1. CS6008 Human Computer Interaction
FOUNDATIONS OF HCI
THE COMPUTER
M.Swarna Sudha
Assistant Professor(Senior Grade)
Department of CSE
Ramco Institute of Technology

2. A computer system is made up of various elements
Each of these elements affects the interaction
◦ Input devices – text entry and pointing
◦ Output devices – screen (small&large), digital paper
◦ Virtual reality – special interaction and display devices
◦ Physical interaction – e.g. sound, haptic, bio-sensing
◦ Paper – as output (print) and input (scan)
◦ Memory – RAM & permanent media, capacity & access
◦ Processing – speed of processing, networks

3. Interacting with computers

4. A ‘typical’ computer system

7. Richer interaction

8. Text entry devices

9. Keyboards
• Most common text input device
• Allows rapid entry of text by experienced
users
• Key press closes connection, causing a
character code to be sent
• Usually connected by cable, but can be
wireless

10. Layout – QWERTY

11. QWERTY (ctd)
2 3 4 5 6 7 8 9 0
Q W E R T Y U I
1
O P
S D F H J LA G K
Z X C V B N M , .
SPACE

12.  Alternative keyboard layout

13. Special keyboards

14. Chord keyboards

15. Phone pad and T9 entry

16. Handwriting recognition

17. Speech recognition

19. Positioning, pointing and drawing

20. The Mouse

21. How does it work

22. Touchpad

24. Joystick and keyboard nipple

25. Touch-sensitive screen

27. Digitizing tablet

28. Cursor keys

29. Discrete positioning controls

30. Thank You ……..