This document discusses different types of input devices for computers including keyboards, joysticks, scanners, trackballs, and spaceballs. It describes the basic components and functions of joysticks for computer games and how scanners digitally copy pictures. Trackballs are like upside down mice that rotate instead of moving across a surface. Spaceballs provide six degrees of freedom for spatial positioning input through pressure applied in various directions.

2. Kailas Sree Chandran
Benoy K M
Krishnakumar R
S7 INDUSTRIAL

4. CLASSIFICATION
Input Devices for TEXTS
Input Devices for GRAPHICS
Input Devices for AUDIO
Input Devices for Video
POINTING Devices

5. DIFFERENT INPUT DEVIES

8. TYPES OF KEYS

10. TYPES OF KEYBOARDS
2. Ergonomic
1. Based on
– Based on
Layout
comfort
-QWERTY -DVORAK
layout layout

19. JOYSTICK
A joystick is used to move the cursor from place
to place, and to click on various items in
programs. They input directional data like a
mouse but work by switches being closed as the
joystick is moved left or right and up or down. It
consists of a stick that pivots on a base and
reports its angle or direction to the device it is
controlling. A joystick is used mostly for
computer games.

20. 1. STICK
2. BASE
3. TRIGGER
4. EXTRA
BUTTONS
5. AUTO FIRE
SWITCH
6. THROTTLE
7. HAT
SWITCH
8. SUCTION
CUP

22. A scanner is used to copy pictures or
other things and save them as files on
the computer. A light moves slowly
over the surface of the picture or
object to be scanned. The colours of
the reflected light are detected and
digitised to build up a digital image.

25. A TRACK BALL is used in the same
way as a mouse but it is useful where
desk space is limited. It is like an
upside down mouse because the user
rotates the ball and the main body
part stays still. It has buttons like a
standard mouse.

27. A Spaceball provides 6 degrees of
freedom. Strain gauge measures the
amount of pressure applied to the
spaceball to provide input for spatial
positioning and orientation as the ball
is pushed or pulled in varies
directions.