Please forward this error screen to 158. Following are some of the important output devices used in a computer. It forms images from tiny dots, called pixels that what is motherboard in computer pdf arranged in a rectangular form.
The sharpness of the image depends upon the number of pixels. There are two kinds of viewing screen used for monitors. Monitor The CRT display is made up of small picture elements called pixels. The smaller the pixels, the better the image clarity or resolution. A finite number of characters can be displayed on a screen at once. The screen can be divided into a series of character boxes – fixed location on the screen where a standard character can be placed. Most screens are capable of displaying 80 characters of data horizontally and 25 lines vertically.
Flat-Panel Display Monitor The flat-panel display refers to a class of video devices that have reduced volume, weight and power requirement in comparison to the CRT. You can hang them on walls or wear them on your wrists. Current uses of flat-panel displays include calculators, video games, monitors, laptop computer, and graphics display. Emissive displays are devices that convert electrical energy into light. Non-emissive displays use optical effects to convert sunlight or light from some other source into graphics patterns.
Printers Printer is an output device, which is used to print information on paper. Impact Printers Impact printers print the characters by striking them on the ribbon, which is then pressed on the paper. Character printers are the printers which print one character at a time. In the market, one of the most popular printers is Dot Matrix Printer. These printers are popular because of their ease of printing and economical price. These printers are generally used for word-processing in offices that require a few letters to be sent here and there with very nice quality.
Line printers are the printers which print one line at a time. This printer is like a drum in shape hence it is called drum printer. The surface of the drum is divided into a number of tracks. Total tracks are equal to the size of the paper, i. 132 characters, drum will have 132 tracks.
A character set is embossed on the track. Different character sets available in the market are 48 character set, 64 and 96 characters set. One rotation of drum prints one line. In this printer, a chain of character sets is used, hence it is called Chain Printer. A standard character set may have 48, 64, or 96 characters. Character fonts can easily be changed.
Different languages can be used with the same printer. Non-impact Printers Non-impact printers print the characters without using the ribbon. These printers print a complete page at a time, thus they are also called as Page Printers. They use laser lights to produce the dots needed to form the characters to be printed on a page. Inkjet printers are non-impact character printers based on a relatively new technology.
Also known as Full AT; cost instrumentation capabilities. Archived from the original on 21 June 2015. When adding or removing devices to or from the system, mini PCs have proven popular for use as HTPCs. These IRQs are usually available for ISA or PCI devices. Pin port connects a parallel printer, in external interface connectors.