1. Describe various types of pen input, and identify other types of input for smart phones.
Light Pen - 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.
The electrical light pen input instrument is usually combined with creating computer software. Designed screen data files are usually joined using a light pen simply by directing it to display positions. A new place shows up on the screen in the area exactly where pen is placed which is sensed through the photocell. The pc software operated the feedback transmission of the instrument.
Digitizer - A Digitizer is also called a graphic tablet and uses a pen input device. It's a flat, rectangle-shaped digital plastic material pad. Every position to the digitizer points to matching video display. It's primarily useful for producing road maps and also engineering blueprints. The actual input gadgets stylus pen and also cursor can be used to trace sketches and also drawings to the digitizer.
Whenever you sketch upon the digitizer with the aid of the stylus pen or cursor, this converts the actual actions associated with stylus or cursor straight into electronic signals which are afterwards routed to the laptop or computer. Therefore a digitizer makes it simple to key in free-hand sketching in to a laptop or computer.
Stylus and Cursor - Stylus pen is actually like a ballpoint pen. It's utilized to compose textual content or make lines (or generate drawings and also pictures) on the exclusively developed graphics display or digitizer. Pen input devices found in several sophisticated graphic devices is called Digital Pen. Generally electronic digital pen supplies much more performance compared to stylus pen.
Stylus pen can be used in graphic programs for instance Computer Aided Design (CAD) and also engineering blueprints and so forth. It's got the convenience of removing textual content as well as lines.
Several portable personal computers make use of touch screens which permit someone to enter any data and even to enable selections in the monitor utilizing a stylus pen or a digital pen. PDA's utilize pen input devices along with tablet Computers quite often use a digital pen. These laptop or computer operates one-of-a-kind platforms also known as optical character recognition. Such a program converts written characters along with symbols to a mode which the computer systems may use and also process all of them.
The actual cursor is surely an input product. It's also used to trace sketches and also drawings with a graphic tablet or perhaps digitizer. This appears like some sort of computer mouse, with the exception of it's got a window using crosshairs, therefore the end user is able to see through to the actual digitizer. Cursor is generally known as Puck.
2. The purpose of various game controllers: gamepads, joysticksand 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.
The
steering wheel, essentially a larger version of a paddle, is used in most racing
arcade games as well as more recent
racing simulators such as
Live for Speed,
Grand Prix Legends,
GTR2, and
Richard Burns Rally. While most
arcade racing games have been using steering wheels since
Speed Race in 1974,
[1] the first steering wheels for home systems appeared on
fifth-generation consoles such as the
PlayStation and
Nintendo 64.
[citation needed]
Many are
force feedback (see
Force Feedback Wheel), designed to give the same feedback as would be experienced when driving a real car, but the realism of this depends on the game. They usually come with pedals to control the gas and brake. Shifting is taken care of with in various different ways including paddle shifting systems, simple stick shifters which are moved forward or back to change gears or more complex shifters which mimic those of real vehicles, which may also use a clutch. Most wheels turn only 200 to 270 degrees lock-to-lock but some models, such as the
Logitech Driving Force Pro,
Logitech G25 and
Logitech G27 can turn 900 degrees, or 2.5 turns, lock-to-lock.
The
Namco Jogcon paddle was available for the PlayStation game
R4: Ridge Racer Type 4. Unlike "real" video game steering wheels, the Jogcon was designed to fit in the player's hand. Its much smaller wheel (diameter roughly similar to a
soda can's) resembles the jog-and-shuttle control wheel used on some
VCRs.
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.
[6]
Though light guns have been used in earlier
arcade games such as
Sega's
Periscope in 1966
[7] and
Missile in 1969,
[8] 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.
A
dance pad, also known as a
dance mat,
dance platform, or
jitter deck is a flat electronic
game controller used for input in dance games. Most dance pads are divided into a 3×3 matrix of square panels for the player to stand on, with some or all of the panels corresponding to directions or actions within the game. Some dance pads also have extra buttons outside of the main stepping area, such as "Start" and "Select". Pairs of dance pads are often joined side-by-side for certain gameplay modes.
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
