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• CRC-32
  Also referred to as ISO 3309, ITU-T V.42, CRC-32-IEEE, and many other names.
  2 KB (261 words) - 13:05, 4 April 2023
• SHA-2
  As of 2012, SHA-2 has six defined-and-approved members, which can be classifie
  2 KB (218 words) - 18:49, 25 March 2017
• LZ4
  When used as a file format, LZ4 files begin with signature bytes <code>04 22 4d 18</code
  896 B (118 words) - 18:17, 30 June 2017
• Project Xanadu
  ...er Lib''. A 1995 ''Wired'' article about the project is regarded by Nelson as an offensive hatchet job.
  2 KB (308 words) - 12:06, 6 September 2017
• Tumbler
  A node is a server that is part of the Xanadu system. To reference the node as a whole (rather than a specific item stored on it), you would use a tumbler ...versions of the document are stored with version numbers that are appended as the next number in the dotted sequence after the document number (which all
  2 KB (394 words) - 15:51, 4 March 2017
• Enfilade
  ...''' is a basic structure used in [[Project Xanadu]] to represent documents as a tree structure. They were invented in 1970 and revised several times sinc ... some other place), while wids are ranges of the tree which can be treated as objects.
  2 KB (224 words) - 13:23, 22 October 2017
• MGR bitmap
  |"xy" || same as "zy"?
  1 KB (167 words) - 15:59, 29 March 2016
• Code 39
  ...ized as ISO/IEC 16388, ANSI MH 10.8 M-1983, and ANSI/AIM BC1/1995, as well as the obsolete military standard MIL-STD-1189 (superseded by the ANSI/AIM sta
  2 KB (242 words) - 14:08, 26 May 2019
• Code 128
  '''Code 128''' is a bar code format which has been standardized as ISO/IEC 15417, and which is capable of encoding the 128-character [[ASCII]] ...128]], is used widely in the shipping industry and was formerly designated as ISO/IEC 15417:2007. This standard uses the coding scheme of Code 128 with s
  2 KB (289 words) - 14:11, 26 May 2019
• Radiance HDR
  '''Radiance HDR''', also known as '''RGBE''' or '''Radiance Picture''', is raster image file format associate Each pixel is encoded as four bytes: three color values (RGB or XYZ), and a shared exponent.
  2 KB (331 words) - 21:52, 7 November 2022
• FM encoding
  ... is used in some formats of [[floppy disk]] and [[magnetic tape]], as well as in networking protocols. ... the absolute value of the signal at any point. A "1" bit might be encoded as a change from "on" to "off", or from "off" to "on", depending on where the
  1 KB (197 words) - 23:41, 4 September 2019
• MFM encoding
  ...]s, including the standard PC/MS-DOS formats and most CP/M formats as well as some others.
  2 KB (231 words) - 14:24, 10 December 2016
• GCR encoding
  ... due to constraints on consecutive bits with no signal transition, as well as (in some formats) providing error-correction.
  1 KB (201 words) - 15:11, 14 September 2013
• Commodore 1571 disk
  ...hat drive well enough even to work with [[copy-protected]] disks), as well as some [[CP/M]] formats. ...ame unreliability issue). The tracks on the double-sided disk were treated as 70 logical tracks, numbered sequentially.
  2 KB (362 words) - 16:51, 21 June 2017
• Apple double-density 3 1/2" disk
  3 1/2" disks are actually 90 mm wide, but are almost universally referred to as "3 1/2 inch" disks even in countries that use the metric system.
  1 KB (189 words) - 13:00, 16 June 2016
• PC-DOS 360K format
  ...rive letters. Eventually, PCs stopped having floppy disk drives altogether as other data storage and transfer media took over.
  2 KB (351 words) - 20:47, 8 September 2019
• PC-DOS 720K format
  ...-DOS or PC-DOS operating system. The disks held exactly twice as much data as the earlier 5 1/4" [[PC-DOS 360K format]], even though the disks were small ...ives; this sort of incompatibility might, however, not have been as common as that between the high and low density 5 1/4" disks).
  2 KB (343 words) - 16:30, 29 March 2017
• PC-DOS 1.44M format
  ...t of the [[PC-DOS 720K format]] for 3 1/2" [[floppy disk]]s, storing twice as much data due to use of a different media surface capable of handling a hig ...ves. (This sort of incompatibility might, however, not have been as common as that between the high and low density 5 1/4" disks.) The drive could tell w
  4 KB (598 words) - 18:37, 1 June 2022
• PC-DOS 1.2M format
  ...e [[PC-DOS 360K format]] for 5 1/4" [[floppy disk]]s, storing over 3 times as much data due to use of a different media surface capable of handling a hig ...rive letters. Eventually, PCs stopped having floppy disk drives altogether as other data storage and transfer media took over.
  2 KB (368 words) - 16:30, 29 March 2017
• PC-DOS 160K format
  As with most single-sided disk formats, users often flipped the disks over to
  1 KB (210 words) - 03:42, 15 February 2015
• PC-DOS 2.88M format
  3 1/2" disks are actually 90 mm wide, but are almost universally referred to as "3 1/2 inch" disks even in countries that use the metric system.
  1 KB (170 words) - 18:39, 1 June 2022
• PC-DOS 180K format
  ...ctor per track than the [[PC-DOS 160K format]], and was in the same format as the [[PC-DOS 360K format]] except using only one side of the disk instead o As with most single-sided disk formats, users often flipped the disks over to
  2 KB (246 words) - 23:34, 27 March 2014
• EAN-13
  ... products sold outside the United States, and is used for some things such as books and medicines in the U.S. The 12-digit UPC is used on other US produc
  3 KB (402 words) - 14:02, 26 May 2019
• POSTNET
  ... to represent a delivery point. Full bars appear at either end of the code as a "guard rail" or "frame bar", and there is one checksum digit. Bulk mailers apply bar codes to the pieces being mailed as one of the requirements of qualifying for discounted rates. The post office
  2 KB (306 words) - 02:20, 13 August 2013
• Intelligent Mail barcode
  ... combinations of these bar types. In addition to the encoding of zip codes as with POSTNET, additional digits identify service type and mailer (each bulk Bulk mailers apply bar codes to the pieces being mailed as one of the requirements of qualifying for discounted rates. The post office
  2 KB (312 words) - 13:19, 9 March 2014
• High Capacity Color Barcode
  ...er than bars) developed by Microsoft and used in the Microsoft Tag system. As the name implies, the color of the triangles is relevant to their meaning, ...icrosoft technology, reader apps exist for iOS and Android devices as well as those running Microsoft operating systems. Unlike QR codes, which can be ma
  1 KB (230 words) - 23:26, 15 June 2013
• Lemon
  ...omplete line-item detail in the scanned receipts instead of just the total as given to free accounts. As it turned out, the businessperson-and-packrat market apparently wasn't the
  5 KB (886 words) - 17:33, 11 July 2021
• Smart card
  A '''smart card''' is a card (such as a credit card, transit fare card, etc.) which includes embedded circuitry,
  1 KB (151 words) - 04:31, 27 January 2015
• Punched tape
  ...at is read into an input device which sequentially reads each row of holes as the tape goes by. ...70s, it was also used for providing software for early microcomputers such as the Altair. It went out of use soon after that, however, in favor of [[magn
  2 KB (225 words) - 13:52, 6 October 2016
• ISO 9660
  |released=1986 (as ECMA-119), 1988 (as ISO 9660) ...a. This can be necessary when the CD also contains non-ISO 9660 data, such as audio data. So, the file will consist of blocks that are larger than 2048 b
  5 KB (749 words) - 18:03, 18 December 2021
• Holography
  ...rk, in security images embedded in cards and documents, and experimentally as a medium for data storage.
  1 KB (225 words) - 12:59, 14 May 2013
• Music box
  ...nos]] to [[Gramophone record|phonographs]] were invented. They still exist as a novelty device.
  1 KB (173 words) - 02:31, 15 May 2013
• ISO 3166-1 country code
  One use of two-letter country codes is as [[Top-level domain|top level domain names]].
  939 B (126 words) - 18:40, 10 October 2016
• Microform
  ...turized form through photographic means. While it was proposed as far back as the 1800s, it only began to be put in practice in the 1920s, but then becam
  2 KB (235 words) - 13:01, 17 May 2013
• OpenEXR
  '''OpenEXR''' (also known as '''EXR''' or '''IlmImf''') is a raster image file format developed by Indus The written documentation is unofficial. The format is defined as "whatever the IlmImf Library reads and writes."
  1 KB (162 words) - 20:47, 26 July 2020
• Wire recording
  ...act, they took over as the dominant medium, allowing for such enhancements as multiple tracks for stereo sound.
  1 KB (139 words) - 12:29, 1 December 2016
• SecureDrop
  ...POGO (Project On Government Oversight) has also installed a version of it, as has the ''Washington Post''.
  1 KB (154 words) - 12:27, 8 July 2014
• Google Glass
  ...a much-hyped wearable networked device in the form of eyeglasses which is (as of early 2013) under a limited developer release by Google. It can do a var
  1 KB (147 words) - 15:07, 14 December 2018
• CBMFS
  structure as a normal file, using a sector interleave of 3. This makes the entry in this sector should be $00 $00, as they are
  27 KB (3,701 words) - 22:05, 4 June 2017
• GEOS VLIR
  the values are limited as described above. 44: C64 filetype (same as that from the directory entry)
  15 KB (2,030 words) - 22:06, 20 May 2013
• GEOS Font
  Each VLIR in a font file is organized as follows: ???-??? Pointed to by $06-$07. The font is stored as several
  3 KB (412 words) - 15:09, 21 September 2014
• Apple II DOS
  ...in 1978. Prior to this, Apple computers were used with [[audio cassette]]s as their data storage medium and their only "operating system" was the built i ...re used in internal development for pre-release versions. 3.0 was prepared as the intended first public release, but was replaced by a version with some
  2 KB (300 words) - 15:46, 13 June 2021
• Pebble
  ...lay messages such as texts and caller-ID for incoming phone calls, as well as displaying the time in various styles, and running apps. It was funded thro
  550 B (79 words) - 00:37, 23 December 2013
• Android
  ...stem for mobile devices, created by Google based on [[Linux]] and released as open-source. It has proved highly popular for smartphones and other devices
  2 KB (241 words) - 19:45, 18 November 2021
• Unix
  ...many others). The currently-popular [[Linux]] operating system was created as an open-source "clone" of Unix. Since Linux runs a large portion of web ser ... themselves "Unix", though many other systems are unofficially referred to as "Unix-like".
  2 KB (274 words) - 00:23, 3 December 2015
• Sinclair BASIC tokenized file
  ... information, including the values of any defined basic variables, as well as the BASIC tokens. ..._CC||Less significant byte of address of next position for LPRINT to print as (in PRBUFF).
  16 KB (2,470 words) - 15:35, 15 February 2020
• ABC (musical notation)
  ...sheets, while the tune header contains metadata and other information such as the key, meter and standard note length of the following tune. The tune bod As noted above, the file header contains processing information for the entire
  20 KB (3,313 words) - 15:14, 9 April 2017
• Video High Density
  ...). While it was developed and demoed in 1978, it was not actually released as a consumer format until 1983 (in Japan). It was never released in North Ame ...leaved manner). The format was designed for interactive use in such things as video adventure games.
  1 KB (196 words) - 02:46, 25 May 2013
• PGN
  Characters are stored in the PGN export format as bytes using the ISO 8859/1 Latin-1 (ECMA-94) code set. ...hese tags is fixed as is the order in which they appear"</i>. The tags are as follows:
  4 KB (681 words) - 13:05, 6 March 2023
• Drum memory
  ...nvented in 1932 and used widely in computers of the 1950s and 1960s, often as the main memory of a computer. It differed from [[hard disk]]s by having a
  520 B (82 words) - 23:26, 25 May 2013