A dot-matrix display is a low-cost electronic digital display device that displays information on machines such as clocks, watches, calculators, and many other devices requiring a simple alphanumeric (and/or graphic) display device of limited resolution.[1]
A 16×2-character dot matrix display, where each character is made from a grid of 5×7 dots
The display consists of a dot matrix of lights or mechanical indicators arranged in a rectangular configuration (other shapes are also possible, although not common) such that by switching on or off selected lights, text or graphics can be displayed. These displays are normally created with LCD, OLED, or LED lights and can be found in some thin film transistors.[2] The Thin Film Transistors had an active display which allows the dot matrix to display different pixels with different colors at the same time.[3] A dot matrix controller converts instructions from a processor into signals that turn on or off indicator elements in the matrix so that the required display is produced.
The dot-matrix display is also known by the obsolete term "punktmatrix display" (German for point-matrix) due to the dot matrix being created in Germany by Rudolf Hell in 1925.
On September 1977, the US Army wrote up a form to the Westinghouse Research and Development Center requesting a more effective energy source that soldiers could use in their technology in the field.[2]Japan and America were using the LCD matrices to develop Casio TVs from 1984 to 2000 creating and experimenting with different display setups.[4] In the 1980s and 1990s, dot-matrix displays were introduced into several technologies including televisions, computers, video game systems, and pinball machines. Dot-matrix displays were added into new pieces of technology as a background part of LCD or OLED displays[5] as the technology improved.
Pixel resolutionsedit
A four-lined dot matrix LCD
Common sizes of dot matrix displays:
128×16 (Two-lined)
128×32 (Four-lined)
128×64 (Eight-lined)
Other sizes include:
92×31 (Four or three-lined)
Character resolutionsedit
A common size for a character is 5×7 pixels, either separated with blank lines with no dots (in most text-only displays), or with lines of blank pixels (making the real size 6×8). This is seen on most graphic calculators, such as Casio calculators or TI-82 and superior.
A smaller size is 3×5 (or 4×6 when separated with blank pixels). This is seen on the TI-80 calculator as a "pure", fixed-size 3×5 font, or on most 7×5 calculators as a proportional (1×5 to 5×5) font. The disadvantage of the 7×5 matrix and smaller is that lower case characters with descenders are not practical. A matrix of 11×9 is often used to give a far superior resolution.
Dot matrix displays of sufficient resolution can be programmed to emulate the customary seven-segment numeral patterns.
A larger size is 5×9 pixels, which is used on many "natural display" calculators.
Wikimedia Commons has media related to Dot-matrix displays.
April 26, 2024
matrix, display, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, february, . This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Dot matrix display news newspapers books scholar JSTOR February 2022 Learn how and when to remove this template message A dot matrix display is a low cost electronic digital display device that displays information on machines such as clocks watches calculators and many other devices requiring a simple alphanumeric and or graphic display device of limited resolution 1 A 16 2 character dot matrix display where each character is made from a grid of 5 7 dots The display consists of a dot matrix of lights or mechanical indicators arranged in a rectangular configuration other shapes are also possible although not common such that by switching on or off selected lights text or graphics can be displayed These displays are normally created with LCD OLED or LED lights and can be found in some thin film transistors 2 The Thin Film Transistors had an active display which allows the dot matrix to display different pixels with different colors at the same time 3 A dot matrix controller converts instructions from a processor into signals that turn on or off indicator elements in the matrix so that the required display is produced Contents 1 History 2 Pixel resolutions 3 Character resolutions 4 See also 5 ReferencesHistory editThe dot matrix display is also known by the obsolete term punktmatrix display German for point matrix due to the dot matrix being created in Germany by Rudolf Hell in 1925 On September 1977 the US Army wrote up a form to the Westinghouse Research and Development Center requesting a more effective energy source that soldiers could use in their technology in the field 2 Japan and America were using the LCD matrices to develop Casio TVs from 1984 to 2000 creating and experimenting with different display setups 4 In the 1980s and 1990s dot matrix displays were introduced into several technologies including televisions computers video game systems and pinball machines Dot matrix displays were added into new pieces of technology as a background part of LCD or OLED displays 5 as the technology improved Pixel resolutions edit nbsp A four lined dot matrix LCD Common sizes of dot matrix displays 128 16 Two lined 128 32 Four lined 128 64 Eight lined Other sizes include 92 31 Four or three lined Character resolutions editA common size for a character is 5 7 pixels either separated with blank lines with no dots in most text only displays or with lines of blank pixels making the real size 6 8 This is seen on most graphic calculators such as Casio calculators or TI 82 and superior A smaller size is 3 5 or 4 6 when separated with blank pixels This is seen on the TI 80 calculator as a pure fixed size 3 5 font or on most 7 5 calculators as a proportional 1 5 to 5 5 font The disadvantage of the 7 5 matrix and smaller is that lower case characters with descenders are not practical A matrix of 11 9 is often used to give a far superior resolution Dot matrix displays of sufficient resolution can be programmed to emulate the customary seven segment numeral patterns A larger size is 5 9 pixels which is used on many natural display calculators See also editDisplay examples Flip disc display Fourteen segment display Hitachi HD44780 LCD controller LED panel Sixteen segment display The military request form source number 2 6 Detailed manual from SHARP Corporation 7 References edit Dot Matrix Definition techterms com Retrieved 2021 09 22 a b Brody Thomas P Luo Fang C Davies David H 1977 09 01 Thin Film Transistor Addressed Display Device Archived from the original on June 1 2022 TFT vs IPS Display What s the Difference Nauticomp 2017 09 11 Retrieved 2021 09 22 Part 6 The history of Pocket Television www guenthoer de Retrieved 2021 09 22 Dot matrix LCD displays module or as OLED for text graphics www lcd module com Retrieved 2021 09 22 Article title bare URL PDF https web archive org web 20220609050959 https eecs oregonstate edu education docs datasheets lcd spec pdf bare URL PDF nbsp Wikimedia Commons has media related to Dot matrix displays Retrieved from https en wikipedia org w index php title Dot matrix display amp oldid 1208479057, wikipedia, wiki, book, books, library,
