Explain the following?
1. Z-mouse
2. Joysticks
3. Touch panels
4. Image scanners
5. Data glove

Z-Mouse:
Include three buttons
A thumb wheel on the side, a track ball on the top, and a standard mouse ball underneath.
This design provides six degrees of freedom to select an object from the spatial position.
Wit this we can pickup an object, rotate it and we can move it in any direction
Used in virtual reality and CAD systems
Joysticks
Consists of small vertical liver mounted on a base
Used to move the cursor around the screen
The screen cursor is moved according to the distance
One or two buttons is usually intended for signaling certain actions

Touch panels
Three types
Optical touch panel
System Bus
CPU
System Frame
Memory Buffer
Video
controller
Electrical touch panel
Acoustical touch panel
Allow selecting the screen position with the touch of finger. Touch input can be recorded using optical, electrical methods
Image scanners
Drawings, color and black and white photos or text can be given as an input to the computer with an optical scanning mechanism.
According to reflected light intensity the gradations of gray scale or color can be stored in an array
Data glove
Constructed with a series of sensors that can detect hand and finger motions
The transmitting and receiving antennas can be structured as a set of three mutually perpendicular cols, forming a three dimensional Cartesian coordinates system.
Electromagnetic coupling between the three pairs of coil is used to provide information about the position and orientation of hand.