output devices - monitors and screens

IN THE NAME OF ALLAH THE MOST

MERCIFUL AND THE MOST BENEFICENT.

Name : Fareeha Jabeen

Roll No. : BS-Zoo-014-023

Presentation: Introduction to …………... Topic :Output Devices

Computers

Output : The information we obtain from a computer is called output.It is the data processed in useful form .

Output Device: It is any type of hardware component that conveys information to one or more people.

“Output Devices:MonitorsPrintersSpeakers, headphones and ear budsData ProjectorsInteractive whiteboardsForce -feedback game controllers Tactile Output

Audio

Display Device : Is an output device that visually conveys text, graphics, and video information.

Monitor A monitor is a display device that is packaged as a separate peripheral.

LCD Monitor: •Wide screen

LCD MONITOR:

produce sharp, flicker-free images. some LCD monitors are wall mountable.The more common sizesare19, 20, 22, 24, 26, 27, and 30 inches .some are 45 or 65 inches.

Wide screens”widescreen, are wider than they are tall

DEVELOPMENT OF LCDS:

Richard Williams and George Heilmeier suggest using liquid crystals for making a display device in 1963.

First operational LCD created by RCA using Dynamic Scattering Method (DSM) in 1968.

First LCD using Twisted Nematic (TN) produced in 1971 .

LCD TECHNOLOGY:

Used for displays in notebooks, small computers, pagers, phones and other instruments

Uses a combination of fluorescent-based backlight, color filters, transistors, and liquid crystal to create and illuminate images.

Until recently, was only used on notebook computers and other portable devices.

In 1997, manufactures began to offer full size LCD monitors as alternatives to CRT monitors.