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Dot matrix printing, [1] sometimes called impact matrix printing, is a computer printing process in which ink is applied to a surface using a relatively low-resolution dot matrix for layout. Dot matrix printers are a type of impact printer that prints using a fixed number of pins or wires [2] [3] and typically use a print head that moves back ...
A school newspaper published using a ditto machine in 1978. A hand-cranked spirit duplicator from the 1960s. The duplicator uses two-ply "spirit masters", also called "master sheets". The first sheet can be typed, drawn, or written upon. The second sheet is coated with a layer of wax that had been impregnated with one of a variety of colorants.
Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) A Machine Identification Code (MIC), also known as printer steganography, yellow dots, tracking dots or secret dots, is a digital watermark which certain color laser printers and copiers leave on every printed page, allowing identification of the device which was used to print a document and ...
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Cheatsheet. For a complete list of wikitext codes, see Help:Wikitext. For information on special words, see Help:Magic words. Links to pages that don't exist are automatically red. Red links in articles often help by showing desired redirects or notable pages. sources in the article will appear where { {reflist}} is put, typically under a level ...
Optical mark recognition (OMR) is the scanning of paper to detect the presence or absence of a mark in a predetermined position. [5] Optical mark recognition has evolved from several other technologies. In the early 19th century and 20th century patents were given for machines that would aid the blind.
Quickstart guide. A quick-start guide or quickstart guide ( QSG ), also known as a quick reference guide ( QRG ), is in essence a shortened version of a manual, meant to make a buyer familiar with their product as soon as possible. This implies the use of a concise step-based approach that allows the buyer to use a product without any delay, if ...
Cheat sheet. A cheat sheet (also cheatsheet) or crib sheet is a concise set of notes used for quick reference. Cheat sheets were historically used by students without an instructor or teacher's knowledge to cheat on a test or exam. [1] In the context of higher education or vocational training, where rote memorization is not as important ...