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INPUT & OUTPUT DEVICE. INPUT & OUTPUT HARDWRE. Input hardware consist of devices that translate data into computer readable form. On the other hand, Output hardware consist of devices that translate information processed by the computer into a human understandable form. INPUT DEVICES.

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input output hardwre
INPUT & OUTPUT HARDWRE
  • Input hardware consist of devices that translate data into computer readable form.
  • On the other hand, Output hardware consist of devices that translate information processed by the computer into a human understandable form.
input devices
INPUT DEVICES
  • Keyboard Scanner
  • Mouse Bar Code Reader
  • Trackball MICR
  • Pointing Stick Sensor
  • Touchpad OMR
  • Touch Screen OCR
  • Light pen Web-Cam
  • Digitizer DigitalCamera&Flash chip.
keyboard
Keyboard
  • A device use to input text and characters by depressing buttons.
  • Actually it is a way to input letters or numbers into different applications or programs.
  • A keyboard also has special keys that help operate the computer.
mouse1
Mouse
  • A mouse is a pointing device used to move a pointer on the screen and to make selections. The mouse is used to open and close files. The bottom of a mouse has a rotating ball or an optical sensor that tracks movement and controls the location of the pointer.
optical mouse
Optical Mouse

Uses light to determine mouse motion.

mechanical mouse
Mechanical mouse
  • Computer mouse that contains a metal or rubber ball on its under side. When the ball is rolled in any direction, sensors inside the mouse detect this motion and move the on-screen mouse pointer in the same direction.
variation of mouse
Variation of Mouse.
  • Trackball : is movable ball, that can be rotated using your fingers or palm.
slide11
Pointing Stick: Looks like a pencil eraser. It can be moved with your finger.
  • It is basically used in Laptop.
slide12
Touchpad: is a small, flat surface over which you slide your finger, using the same movement you would with mouse.
slide13
Touch Screen: is a video display screen that can be used as to receive input from the touch of a finger.
  • Touch screen is popularly used in ATMs.
slide15
Light pen: is a light sensitive pen like device which allow users to enter handwriting and marks onto a screen by means of a pen like stylus rather than typing on a keyboard.
slide17
Digitizer: It is an electronic pen which can convert drawings and photos to digital data.
slide18
Scanner: is an input device which can translate images of text, drawings, photos and the like into digital form.
bar code reader
BAR CODE READER
  • Bar Code:

The vertical zebra-striped marks on most manufactured retail product.

bar code reader1
BAR CODE READER
  • Barcode Reader: are optical scanners that can translate the symbols in the bar code into digital code.
slide22
MICR
  • Magnetic Character Recognition (MICR):

It can read the strange looking numbers printed at the bottom of the checks.

slide24
OMR
  • Optical Mark Recognition:

Device that can read pencil marks and converts them into computer usable form.

Common Use: SAT Exam, GRE Exam.

slide26
OCR
  • Optical Character Recognition:

Device that can read preprinted character in a particular font and converts them into digital code.

slide27
Web-Cam: A camera attaches to a computer used to record moving image that can be posted on a website in real time.
slide29
Sensor: It is a input device that collects specific data directly from the environment and transmits it to a computer. It can be used to detect speed, movement, weight, pressure, temperature, wind, smoke, shapes etc.
output device
OUTPUT DEVICE

Output can be of Two types

Softcopy

Hardcopy

Other

softcopy output device
Softcopy Output Device
  • Monitor: Display the output. It can be of two types

[1] CRT Monitor: Cathode Ray tube Monitor

[2] Flat Panel Monitor: Liquid crystal display, Plasma, LED.

  • Projector: is an output device used to project information on to a large screen.
slide34
CRT (Cathode Ray Tube) monitors use phosphorescent dots to create the pixels that make up display images.
slide36
Flat Panel Monitors: Flat panel monitors usually use LCD (Liquid Crystal Display) or plasma to create output. Light is passed through liquid crystals to create the pixels.
hardcopy output device
Hardcopy Output Device
  • Printer: output device that can prints character, symbol, graphics etc on paper or other hardcopy medium.
  • Dot-Matrix Printer
  • Laser Printer
  • Ink-Jet Printer
  • Plotter
  • Multifunctional Printers.
slide39
Dot matrix: Dot matrix printers use a print head to imbed images on a surface, using an ink ribbon.
slide41
Laser: Laser printers use toner drums that roll through magnetized pigment and then transfer the pigment to a surface.
slide42
Plotter

Plotters create a hard copy rendition of a digitally rendered design. The design is sent to the plotter via a graphics card, and creates the design using a pen. Generally used with engineering applications, plotters basically draw an image using a series of straight lines.

other output device
OTHER OUTPUT DEVICE
  • Sound output Device: Speaker.
  • Video Output Device: Photographic images that are played at 15-29 frames per second to give the appearance of full motion.