What Is Output Devices Explain Types Of Monitors

Output device

Any peripheral that receives or displays output from a computer. In the picture to the right, is an inkjet printer and a good example of anoutput device that can make a hard copy of anything on a computer. Below is a listing of all the different computer output devices found on a computer.

Types of output devices

• 3D Printer
• Braille embosser
• Braille reader
• Flat panel
• GPS
• Headphones
• Computer Output Microfilm (COM)
• Monitor
• Plotter
• Printer
• Projector
• Sound card
• Speakers
• Speech-generating device (SGD)
• TV
• Video card

Flat-panel display

Thin screen displays found with all portablecomputers and becoming the new standard withdesktop computers. Instead of utilizing thecathode-ray tube technology flat-panel displaysuse Liquid-crystal display (LCD) technology or other alternative making them much lighter and thinner when compared with a traditionalmonitor. In the picture to the right, is of theSamsung 915V flat-panel display and an example of what a flat-panel display may look like.

Monitor

1. Alternatively referred to as a video display terminal (VDT) and video display unit (VDU),a monitor is a video display screen and the hard shell that holds it. In its most common usage, monitor refers only to devices that contain no electronic equipment other than what is essentially needed to display and adjust the characteristics of an image.

Like most TVs, the computer monitor has a CRT (Cathode Ray Tube) that is found inside the computer monitor as illustrated in the picture to the right. The CRT is the main component and most expensive part within your computer monitor.

Today, most users have replaced the traditional CRT monitor with the newer flat panel displays.

CRT

1. Short for Cathode-Ray Tube, CRT is the electron beams within a monitor that move across your screen either interlaced or non-interlaced hitting phosphor dots on the inside glass tube. In the picture to the right, is an example of the inside of a computer monitor including the CRT, thanks go out to Jeff7 for sharing this image.

Within the CRT are three electron guns, red, green, and blue. Each of these guns streams a steady flow of electrons, left to right, for each line of your monitor. As the electrons hit the phosphors on the CRT, the phosphor will glow certain intensities. As a new line begins, the guns will then begin at the left and continue right; these guns will repeat this process sometimes thousands of times until the screen has been completely drawn line by line. Once the phosphors on the CRT have been hit with an electron they will only glow for a short period of time; because of this, the CRT must be refreshed, which means the process will be repeated as explained above. If the video card's refresh rate is not set high enough, you may encounter a flicker or a noticeable steady line scrolling from the top to the bottom of your screen.