QUIZ 2

Quiz 2: July 08, 2011

1. Describe various types of pen input, and identify other types of input for smart phones.
2. The purpose of various game controllers: game pads, joysticks and wheels, light guns, dance pads,
and motion-sensing game controllers.
3. Explain how resolution affects the quality of a picture captured on a
digital camera.
4. Describe the uses of voice recognition, Web cams, and video conferencing.
5. Discuss how various scanners and reading devices work: optical scanners,
optical readers, bar code readers, RFID readers, magnetic stripe card
readers, MICR readers, and data collection devices.
6. Summarize the various biometric devices: fingerprint reader, face
recognition system, hand geometry system, voice verification system,
signature verification system, and iris recognition system

ANSWERS:

1.
2.Game controller is a device used with games or entertainment systems used to control a payable character or object, or otherwise provide input in a computer game. Game pad is a pointing device that controls the movement and actions of players or objects in games. Joystick is a vertical lever mounted on a base. Wheel is a steering-wheel-type input device.  Light gun is a peripheral used to "shoot" targets on a screen, they usually roughly resemble firearms or ray guns.Their use is normally limited to rail shooters, or shooting gallery games like those that came with the Shooting Gallery light gun. A rare example is Taito's 1992 arcade game Gun Buster, a first-person shooter that used a joystick to move and a light gun to aim. Dance pads, Motion-sensing game controllers

Ø3. Sharpness and clarity of image The higher the resolution, the better the image quality, but the more expensive the camera. . Pixel (picture element) is single point in electronic image. Greater the number of

pixels, the better the image quality.

4.