describe the types of printers depending upon printing mechanism.OR what are the impact and non-impact printers?

impact and non-impact printers Different printers have different printing mechanisms. Therefore, printers are classified into two  main ca...

what are printers?briefly describe their categories/ types.

Printers Printers are the most commonly used output devices. they are used to produce the hard-copy of the output. the output printed on t...

what is flat panel monitors? describe different types of technologies used in flat panel monitors.

Flat-panel monitor Falt-panel monitor is a lightweight, thin screen. it consumes less power then CRT monitor.it can operate with a charge...

what is CRT monitor?describe the refresh rate or refresh CRT and persistence.

CRT Monitor CRT stands for cathode-Ray tube. A type of monitor that uses CRT to display output on the screen is known as CRT monitor. CR...

what is monitor?Also describe the characteristics of monitor.

MONITOR Monitor is also called display screen. it is a commonly used output device. it is used as soft-copy output device. the output may ...

write short notes on "digital camera and video camera".what is audio input and audio input device?write short notes in microphone and speech recognition system.

Digital camera A digital camera is an input device. it is used to capture(or take) pictures and stores them in digital form. it does not u...

what is mouse?describe its functions.

MOUSE Mouse is the most commonly used pointing input device. it is used to control the cursor or pointer on the screen and give commands t...