..Uthaya Chap 05 Input

Uthaya Chap 05 Input

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Uthaya Chap 05 Input - Presentation Transcript

What Is Input?
Input is any data or instruction entered into the memory of a computer.
By:UthAyA
Difference Among a Program, a Command, and a User Response
*Program is a series of related instructions that tells a computer what tasks to perform and how to perform them.
*Command is an instructions that causes a program to perform a specific action.
*User Response replying to a question displayed by a program to perform certain actions.
->Keyboard is an input that contains keys users press to enter data and instructions into a computer.->Most keyboard also have function keys programmed to issues commands ; toggle keys that switch between two states when press; and keys used to move the insertion point, or cursor , on the screen.
-> Input Device is any hardware component that allows users to enter data and instructions(program, command, and user response)
Mouse is a pointing device that fits under the palm of your hand.
Optical mouse -> emit and sense light to detect the mouse’s movement.
Laser mouse -> uses a laser and is more expensive than an optical mouse.
Air mouse -> allows you to control objects, media players, and slide shows by moving
the mouse in predetermined directions through the air.
Wireless/Cordless mouse -> transmit data using wireless technology.
Touch screen is a touch-sensitive display device.Touch screen that recognize multiple points of contact at the same time are known as multi-touch.
*(Kiosk is a freestanding computer that usually includes a touch screen)
*(Microsoft Surface is a 30-inch tabletop display that allows one or more people to
interact with screen)
Touch-sensitive pad is an input device thatenable users to scroll through.
Various Types Of Pen Input and Other Types of Input for Smart Phone.
*Pen input is stylus or digital pen that u touch on a flat surface, such as a screen on a
monitor, mobile device and a signature capture pad.
*Stylus is a small metal or plastic device that looks like a tiny ink pen but uses
pressure instead of ink.
*Digital pen is features electronic erasers and programmable buttons.
*Handwriting recognition software is a program that translate handwritten letters
and symbols into characters a computer or mobile device can process.
*Signature capture pad captures signatures written with a stylus or pen attached to a device.
*Gamepad controls the movement and actions and object.
*Joystick is a handheld vertical lever that you move to control a simulated vehicle player.
*Wheel is a steering-wheel-type device that you turn to stimulate driving a vehicle.
*Light gun is used to shoot targets as you pull the trigger on the weapon.
*Dance pad is an electronic device, divided into panels, that users press with their feet.
*Motion sensing game controllers such as Wii Remote guide on screen elements by moving a handheld input device in predetermined direction through the air.
How Does Resolution Affect the Quality of a Picture Captured on a Digital Camera?
*Resolution is the number of horizontal and vertical pixels in a display device.
*higher the resolution the better the picture quality.
How Are Voice Recognition, Web Cams, and Video Conferencing Used?
*Voice recognition also called speech recognition is the
computer ‘s capability of distinguishing spoken words.
*Web cam enable users to capture video and still image
and then send or broadcast over the internet.
*Video conference enable two or more users to transmit audio and video data.
Scanner or optic scanner is a light sensing input device that reads printed text and graphic and translate the results into a form the computer can process.
Examples:
*Flatbed scanner
*Optical reader
*Optical character recognition(OCR)
*Optical mark recognition(OMR)
*bar code reader/bar code scanner
*Radio frequency identification(RFID)
*magnetic stripe card reader
*magnetic ink character recognition(MICR)
What Are Various Biometric Devices?
*Biometric device translate a personal characteristic into digital
code that is compared with a digital code stored in the
computer to identify an individual.
Devices:
*fingerprint reader
*face recognition system
*hand geometry system
*voice verification system
*signature verification system
*retinal scanner