Quiz # 2 CompEd 321L IT Concepts & SAD

1. Describe various types of pen input, and identify other types of input for smart phones.
              
          Light pen is actually one more pointing input gadget. This will pick up on existence of light. It's a hand held pen fashioned gadget having a photocell installed in it's front-end. Once the front-end on the pen is actually touched on the display screen, the actual photocell registers a position associated with display. This kind of instrument also offers a button. An individual points to the actual object that will end up being chosen on the display screen using the light pen after which clicks the button in the pen. Light pen gadgets are utilized by technical engineers, visual creative designers and so on. These types of gadgets call for unique displays. Light pen can be used on PDA's and also other kinds of portable computers.

 

2. The purpose of various game controllers: game pads, joysticks and wheels, light guns, dance pads,

and motion-sensing game controllers.

          

        A gamepad, also known as a joypad, is the most common kind of game controller. They are held in both hands with thumbs and fingers used to provide input. Gamepads can have a number of action buttons combined with one or more omnidirectional control sticks or buttons. Action buttons are generally handled with the digits on the right hand, and the directional input handled with the left. Gamepads are the primary means of input on nearly all modern video game consoles. Due to the ease of use and precision of gamepads, they have spread from their origin on traditional consoles to computers, where a variety of games and emulators support their input.

Most modern game controllers are a variation of a standard gamepad. Common additions include shoulder buttons placed along the edges of the pad, centrally placed buttons labeled start, select, and mode, and an internal motor to provide haptic feedback.

        This joystick is a peripheral that consists of a handheld stick that can be tilted around either of two axes and (sometimes) twisted around a third. The joystick is often used for flight simulators. HOTAS controllers, composed of a joystick and throttle quadrant (see below) are a popular combination for flight simulation among its most fanatic devotees. Most joysticks are designed to be operated with the user's primary hand (e.g. with the right hand of a right-handed person), with the base either held in the opposite hand or mounted on a desk.

       A 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.

Though light guns have been used in earlier arcade games such as Sega's Periscope in 1966 and Missile in 1969, the first home console light gun was released for the Magnavox Odyssey in 1972; later on, Nintendo would include one standard on their Famicom and NES, called the NES Zapper. Nintendo has also released a "shell" in the style of a light gun for the more recent Wii Remote called the Wii Zapper which comes bundled with Link's Crossbow Training

 

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