Mention several o/p devices

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I. CRT [Cathode Ray Tube] Monitor – least expensive type of monitors, although they are becoming increasingly rare as TFT monitors are now taking over. It uses an electron gun to fire against a phosphor screen, which creates a picture that is made up of tiny dots.

II. TFT [Thin-Film Transistor] Monitor – The screen us made up of thousands of tiny pixels, which are made up of transistors controlled by a microprocessor.

III. Laser Printer – produces very high-quality hard copy output. The print rate per page is very high if a number of pages are being printed.

IV. Inkjet Printer – produces good quality hard copies. Although the quality is not as quite as good as that from the laser printer, it is far better than that from dot matrix printers.

V. Dot-matrix Printer – is a type of impact printer, where a print-head (made up of matrix of pins) presses against an inked ribbon. It tends to be slow, noisy and the output is not of a good quality.

VI. Plotter – produces hard copies, but operates in a different way to printers. It is not limited to normal printer paper size but is capable of producing highly accurate, very large drawing and posters.

VII. Speaker – can be connected directly to a computer or is built into the monitor or casing Digital data from the computer is converted into analogue, using a Digital to Analogue Converter (DAC).

VIII. Multimedia Projector – receive signals that can either be analogue or digital, although the most modern projectors only work with digital inputs. The signal source is usually from a computer, television or DVD player.

IX. Terminal - is used for entering data into, and displaying data from, a computer or a computing system.