Nine-segment display
{{Short description|Form of electronic display device for displaying decimal numerals}}
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| File:9-segment ´´ labeled.svg|Nine-segment display File:9-segment `` labeled.svg|Alternate File:9-segment `´ labeled.svg|Alternate File:9-segment ´` labeled.svg|Alternate |
File:Commensegmentdisplays-svg-div.png
A nine-segment display is a type of display based on nine segments that can be turned on or off according to the graphic pattern to be produced. It is an extension of the more common seven-segment display, having an additional two diagonal or vertical segments (one between the top and the middle, and the other between the bottom and the horizontal segments). It provides an efficient method of displaying alphanumeric characters.
The letters displayed by a nine-segment display are not consistently uppercase or lowercase in shape. A common compromise is to use a lower-case "n" instead of "N". Depending on the design of the display segments, the use of the extra two segments may be avoided whenever possible, as in the Nixxo X-Page "tall" lowercase "r" and "y".
Uses
File:Russian postal codes.svgs: Upper image: preprinted at the bottom left corner of an envelope are six nine-segment grids to be filled with the six digits of the postal code. Bottom image: samples of each digit in the grid format.]]
In some Soviet digital calculators of the 1970s, such as the Elektronika 4-71b, 9-segment displays were used to provide basic alphanumerics and avoid confusions with representing numbers in Soviet postcodes.
{{multiple image
| width = 59
| image1 = 9-segment ´´ aghi.svg
| alt1 = Digit 3 via segments a g h and i of a nine-segment display
| caption1 = Digit 3
| image2 = 7-segment abcdg.svg
| alt2 = Letter {{lang|ru|З}} via segments a b c d and g of a nine-segment display
| caption2 = Letter З (ze)
| footer = Different segments for similar glyphs
}}
The extra two bars were slanted forward, allowing for an appropriate-looking И, and to differentiate the numeral 3
from the letter З. The Sharp Compet calculator also uses a 9-segment display, allowing a small range of characters and symbols to be used.
Nine-segment displays are used in many Timex digital watches, and some pagers, such as the Nixxo XPage,{{cite web|url=http://www.primustel.ca/en/residential/paging/en_xpage.pdf|title=Primus|website=Primus Ontario English}} the Arch BR502 pager,{{cite web|url=http://content.arch.com/products/datasheets/DataSheetbr502.pdf|archive-url=https://web.archive.org/web/20070413060226/http://content.arch.com/products/datasheets/DataSheetbr502.pdf|url-status=dead|archive-date=2007-04-13|title=Br502 Numeric Pager}} and the Scope Geo N8T.{{cite web|url=http://www.sensorium.co.uk/datasheets/paging/geo_n8t.pdf|archive-url=https://web.archive.org/web/20070929200255/http://www.sensorium.co.uk/datasheets/paging/geo_n8t.pdf|url-status=dead|archive-date=2007-09-29|title=GEO N8T}} They are also used in some Epson Stylus printers, and Newport iSeries digital meters.{{citation|url=http://www.newportus.com/PDFspecs/i32.pdf|archive-url=https://web.archive.org/web/20051025171037/http://www.newportus.com/PDFspecs/i32.pdf|url-status=usurped|archive-date=October 25, 2005|title=⁄32 DIN Temperature, Process and Strain PID Controllers}} The display used in the iSeries is unique in that it has a vertical extra segment at top, and a fully backwards-leaning slant for the extra segment at bottom. This allows for a somewhat more natural-appearing R and M.
A nine-segment display has been developed for displaying Bengali{{Cite journal |last1=Miah |first1=Mohammad Badrul Alam |last2=Rahman |first2=Md. Habibur |last3=Islam |first3=Md Nazrul |display-authors=1 |date=2015-01-01 |title=Designing More Effective 9 Segment Display for Bengali and English Digits |url=https://www.researchgate.net/publication/329778175 |journal=Engineering International}} and Roman numerals.{{cn|date=November 2019}}
Medion MD8910 - Samsung SVV-07SS22-3917.jpg|Nine-segment vacuum fluorescent display
Stamp Soviet Union 1977 CPA 4775.jpg|Postal code nine-segment sample on an envelope
1990 Latvian Stationery.jpg|Postcard from Latvia just before its independence
See also
File:Common segment displays.svg-, 9-, 14-, 16-segment displays shown side by side]]
References
{{Reflist}}
External links
{{Spoken Wikipedia|Nine Segment Display.ogg|date=2016-07-18}}
- {{Commons category-inline}}
{{display technology}}