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314:, scanning across rows, quickly flashing the LEDs on and off, it is possible to create characters or pictures to display information to the user. By varying the pulse rate per LED, the display can approximate levels of brightness. Multi-colored LEDs or RGB-colored LEDs permit use as a full-color image display. The refresh rate is typically fast enough to prevent the
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Although the output of modern computers is generally all in the form of dot matrices (technically speaking), computers may internally store data as either a dot matrix or as a vector pattern of lines and curves. Vector data encoding requires less memory and less data storage, in situations where the
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Early 1980s impact printers used a simple form of internal raster image processing, using low-resolution built-in bitmap fonts to render raw character data sent from the computer, and only capable of storing enough dot matrix data for one printed line at a time. External raster image processing was
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typefaces. For maximum image quality using only dot matrix fonts, it would be necessary to store a separate dot matrix pattern for the many different potential point sizes that might be used. Instead, a single group of vector shapes is used to render all the specific dot matrix patterns needed for
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are not all-points-addressable, whereas graphics modes are. With the advent of more powerful computer graphics hardware, the use and importance of text-only display modes has declined, and with graphics modes it is generally taken for granted that they are all-points-addressable.
68:, used to represent characters, symbols and images. Most types of modern technology use dot matrices for display of information, including mobile phones, televisions, and printers. The system is also used in textiles with sewing, knitting and weaving.
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A dot matrix is useful for marking materials other than paper. In manufacturing industry, many product marking applications use dot matrix inkjet or impact methods. This can also be used to print 2D matrix codes, e.g.
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with their cathodes joined in rows and their anodes joined in columns (or vice versa). By controlling the flow of electricity through each row and column pair it is possible to control each LED individually. By
260:. Some printers have a fixed resolution across the printhead but with much smaller micro-stepping for the mechanical paper feed, resulting in non-uniform dot-overlapping printing resolutions like 600×1200 dpi.
325:
is the large, low resolution dots. The OLED monitor functionally works the same, except there are many times more dots, and they are all much smaller, allowing for greater detail in the displayed patterns.
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Depending on the printer technology the dot size or grid shape may not be uniform. Some printers are capable of producing smaller dots and will intermesh the small dots within the corners larger ones for
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array, refers to an arrangement whereby bits or cells can be individually manipulated, as opposed to rewriting the whole array, or regions such as characters, every time a change is needed.
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only, and either leave the interiors of closed vector shapes unfilled, or perform slow, time-consuming and often non-uniform shape-filling, as on pen-based plotters.
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All types of electronic printers typically generate image data as a two-step process. First the information to be printed is converted into a dot matrix using a
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possible such as to print a graphical image, but was commonly extremely slow and data was sent one line at a time to the impact printer.
305:, useful both for industrial and commercial information displays as well as for hobbyist human–machine interfaces. It consists of a 2-D
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198:. Impact printers survive where multi-part forms are needed, as the pins can impress dots through multiple layers of paper to make a
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Almost all modern computer printers (both impact and non-impact) create their output as matrices of dots, and they may use
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In printers, the dots are usually the darkened areas of the paper. In displays, the dots may light up, as in an
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For other uses including the printer and display types, and fictional characters of this name, see
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Except for impact dot matrix printers, it is not customary to call the others by that term.
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All points addressable (APA), or pixel addressable, in the context of a dot matrix on a
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BASCOM Programming of
Microcontrollers with Ease: An Introduction by Program Examples
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An alternate form of information display using lines and curves is known as a
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Implementing a window system for an all points addressable display
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but is no longer used. Electronic vector displays were typically
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image processing may occur in either the printer itself using a
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for illustrating the alignment of two DNA or protein sequences.
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ribbon, onto the paper. It was originally contrasted with both
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As an impact printer, the term mainly refers to low-resolution
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The primary difference between a common LED matrix and an
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A LED matrix display scanning by rows to make the letter W
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Gonzalez, John
Cambell (1982), Zippel, Richard E. (ed.),
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Matick, R.; Ling, D. T.; Gupta, S.; Dill, F. (2006) ,
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Close-up view of dot matrix text produced by a printer
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194:calls a "dot-matrix impact printer" are not called
38:Dot matrix pattern woven into fabric in 1858 using
232:, and the output is a dot matrix referred to as a
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75:, was used with early computing devices such as
381:"All points addressable raster display memory"
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446:"PERSONAL COMPUTERS; LETTER QUALITY, ALMOST"
164:, both for impact and non-impact printers.
469:. Universal Publishers. pp. 114–119.
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385:IBM Journal of Research and Development
225:metal or plastic stamps to mark paper.
115:shapes may need to be resized, as with
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120:the current display or printing task.
444:ERIK SANDBERG-DIMENT (June 4, 1985).
424:Massachusetts Institute of Technology
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301:is a large, low-resolution form of
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190:Printers that are not but what
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342:), a type of computer printing
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79:radar displays and pen-based
64:is a 2-dimensional patterned
16:2-dimensional patterned array
318:from detecting the flicker.
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21:Dot matrix (disambiguation)
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513:
348:, a type of display device
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18:
361:, a matrix of square dots
242:page description language
202:, for security purposes.
340:impact matrix printing
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230:raster image processor
221:that used fixed-shape
124:All points addressable
102:, or darken, as in an
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463:Claus Kühnel (2001).
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156:The process of doing
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397:10.1147/rd.284.0379
336:Dot matrix printing
196:dot matrix printers
182:dot matrix printers
162:dot matrix printers
158:dot matrix printing
77:air traffic control
450:The New York Times
353:display convention
346:Dot-matrix display
303:dot-matrix display
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192:The New York Times
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476:978-1-58112-671-6
53:Dot matrix-style
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246:Adobe Postscript
136:consisting of a
130:computer monitor
110:Use in computers
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207:impact printers
200:carbonless copy
177:inkjet printing
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152:Use in printers
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284:Main article:
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172:laser printing
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134:display device
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100:plasma display
73:vector display
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44:Jacquard loom
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40:punched cards
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22:
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432:1721.1/27922
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400:, retrieved
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339:
323:OLED display
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312:multiplexing
307:diode matrix
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262:
258:antialiasing
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234:raster image
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191:
189:
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160:can involve
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113:
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299:LED display
286:LED display
215:daisy wheel
143:Generally,
422:(Thesis),
402:2013-09-28
391:(4): 379,
366:References
272:LED matrix
266:Datamatrix
211:typewriter
145:text modes
85:monochrome
62:dot matrix
55:skywriting
316:human eye
491:Category
330:See also
244:such as
223:embossed
81:plotters
359:QR code
132:or any
473:
295:matrix
238:Raster
138:pixel
98:, or
66:array
42:on a
471:ISBN
338:(or
117:font
428:hdl
393:doi
297:or
292:LED
290:An
104:LCD
96:CRT
92:LED
493::
448:.
426:,
410:^
389:28
387:,
383:,
351:A
268:.
106:.
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479:.
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395::
23:.
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