CHAPTER 7: INPUT AND OUTPUT

INTRODUCTION:

INPUT AND THE METHOD THAT ARE COMMONLY USED:

KEYBOARD:

Ergonomic keyboard:

-has a design that reduces the chance of repetitive strain injuries

-incorporates comfort, efficiency, and safety into the design of the workplace

POINTING DEVICES:

PEN INPUT:

-a stylus (or stylus pen)

-small pen-shaped instrument that is used to input commands to a computer screen, mobile device or graphics tablet.

-with touchscreen devices, a user places a stylus on the surface of the screen to draw or make selections by tapping the stylus on the screen.

MOTION INPUT:

-sometimes called gesture recognition

-users can guide on-screen elements using air gestures

VOICE INPUT:

-the process of entering input by speaking into a microphone

AUDIO INPUT:

-the process of entering any sound into the computer such as speech, music, and sound effects

VIDEO INPUT:

-the process of capturing full-motion images and storing them on a computer or mobile device’s storage medium

WEBCAM USES:

-Capture video and still images

-Send email messages with video attachments

-Make video call

SCANNERS AND READING DEVICES:

QR CODE:-stores information in both a vertical and horizontal direction

Example:

OUTPUT:

-data that has been processed into a useful form

DISPLAYS:

-visually conveys text, graphics, and video information

PRINTER:

TYPE OF PRINTER	USES
INK- JET PRINTERS	forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper
PHOTO PRINTERS	-high speed -black and white -colour
LABEL PRINTERS	small printer that prints on an adhesive-type material that can be placed on a variety of items
ALL-IN-ONE PRINTERS	single device that prints, scans, copies, and in some cases, faxes
THERMAL PRINTERS	generates images by pushing electrically heated pins against the heat-sensitive paper
MOBILE PRINTERS	small, lightweight, battery-powered printer that allows a mobile user to print from a mobile device
IMPACT PRINTERS	form characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that physically contacts the paper

OTHER OUTPUT DEVICES:

ASSISTIVE TECHNOLOGY INPUT AND OUTPUT:

-Braille input

-Braille printer

CONCLUSION:

There are many variety of options for input and output. There are also many importance for it, without them, a computer would either has to be imbedded in your body or serve as a door stop. Input devices allow your computer to receive instructions and create something, output devices confirm those actions and enjoy/use your creations.