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What is a laser printer ? It’s non-impact printer. It’s a page printer. Three main components laser beam, a multi-sided mirror, a photoconductive drum & toner. To print page laser beam is focused on drum by spinning multisided mirror. Drum is electric charged. Toner which is composed of oppositely charged ink particles, stick to the…
What is an inkjet printer ? It’s non-impact printer. It’s a character printer. Forms characters and all kinds of images by spraying drops of ink on to the paper. Print head contains 64 tiny nozzles. To print a character the printer the printer selectively heats the appropriate set of nozzle as the print head moves…
What is a Chain Printer ? It’s a line printer. Able to print a line at the same time. Consist of a metallic chain on which all characters of character set are embossed. Character set contains 48, 64 or 96 characters. Characters are embossed several times. Chain rotates at high speed when the desired characters…
What is a Drum Printer ? Drum Printer :- It’s a line printer. Able to print a line at the same time. Consist of a solid cylindrical drum with characters embossed on it in circular band. Each band consists of character set which contains 96 characters. Drum rotates fastly when desired characters arrives an appropriate…
What is a Daisy Wheel Printer ? Character printer. Able to print a single character at the same time. Contain a metal wheel on which the characters & numbers are raised on the eachpetal. The wheel is rotated very fast when the desired characters arrives at correct position a print hammer strike to produce output….
What is a Dot matrix printer ? Character printer. Capable to print single character at the same time. Forms characters & images as a pattern of dots. Contains a print head which moves horizontally across paper. Uses 5 × 7 matrix to form a character. Print by hammering the pins on inked ribbon to leave…
What is a Printer? Types of Impact and Non Impact Printers What is a Printer :- The printer is a most commonly used output device. It is used to producing the hard copy output. It prints characters, symbols & graphics on the paper. Printer can be categorised according to the technology used in printer, speed,…
What is PDP (Plasma Display Panel) ? In Plasma Displays, ionized gas is sandwiched between two glass plates. A number of parallel wires run horizontally as well as vertically. A small amount of current is passed through one horizontal and one vertical wireto cause the gas to glow at a spot at the intersection of…
What is LCD (Liquid Crystal Display) ? In LCD, a liquid crystalline material is sandwiched between two glass or a plastic plates. The front plate is transparent and the back plate is reflective. There is a coating of thin film on the front plate. The coating is transparent and conductive. Its sections (segments) are in…
What is a CRT Monitor ? The monitor is the common output device mostly used It is a softcopy output device. It can be thought of as a high resolution TV set. The monitor can also determine if the display will be colour, black and white, or include graphical objects (pictures). Two types of monitors…