Symbols for Legacy Computing: Difference between revisions

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|note = <ref>{{Cite web|url=https://www.unicode.org/ucd/|title=Unicode character database|work=The Unicode Standard|access-date=2023-07-26}}</ref><ref>{{Cite web|url=https://www.unicode.org/versions/enumeratedversions.html|title=Enumerated Versions of The Unicode Standard|work=The Unicode Standard|access-date=2023-07-26}}</ref>

}}

'''Symbols for Legacy Computing''' is a [[Unicode block]] containing graphic characters that were used for various [[home computer]]s from the 1970s and 1980s and in [[Teletextteletext]] broadcasting standards. It includes characters from the [[Amstrad CPC character set|Amstrad CPC]], [[MSX character set|MSX]], [[Mattel Aquarius]], [[RISC OS character set|RISC OS]], [[MouseText]], [[Atari ST character set|Atari ST]], [[TRS-80 Color Computer]], [[Oric computers|Oric]], [[TI-99/4A|Texas Instruments TI-99/4A]], [[TRS-80 character set|TRS-80]], [[Minitel]], [[Teletext character set|Teletext]], [[ATASCII]], [[PETSCII]], [[ZX80 character set|ZX80]], and [[ZX81 character set|ZX81]] character sets, as well as. [[semigraphicsSemigraphics]] characters are also included in the form of new block-shaped characters, line-drawing characters, and 60 "sextant" characters (semigraphic character made up of six smaller blocks).<ref>{{cite web |url=https://www.unicode.org/L2/L2018/18235-terminals-prop.pdf |title=Proposal to add characters from legacy computers and teletext to the UCS |access-date=2020-03-11}}</ref><ref>{{cite web |url=https://www.unicode.org/L2/L2018/18235-aux-LegacyComputingSources.pdf |title=Legacy Computing Sources |access-date=2020-03-11}}</ref> Additional characters were added to this block in Unicode 16.0 as well.

A supplemental block ([[Symbols for Legacy Computing Supplement]]) was added with Unicode 16.0.

A supplement block was approved in 2022 for inclusion in Unicode 16.0.<ref>{{Cite web|url=https://www.unicode.org/alloc/Pipeline.html|title=Proposed New Characters: The Pipeline|website=www.unicode.org}}</ref>

==Block==

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{{Unicode chart Symbols for Legacy Computing}}

The image below is provided as quick reference for these symbols on systems that are unable to display them directly (it shows characters newly assigned in Unicode 16.0):

[[File:Symbols for Legacy Computing Unicode block.png|480px|left]]

[[File:UCB Symbols for Legacy Computing Unicode block.png|480px600px|left]]{{clear}}

{{clear}}

==History==

The following Unicode-related documents record the purpose and process of defining specific characters in the Symbols for Legacy Computing block:

{{sticky header}}

{| class="wikitable sticky-header"

|-

! [[Unicode#Versions|Version]] !! {{nobr|Final code points<ref group=lower-alpha name=final/>}} !! Count !! [[International Committee for Information Technology Standards|L2]]&nbsp;ID !! [[ISO/IEC JTC 1/SC 2|WG2]]&nbsp;ID !! Document

|-

| rowspan="10" | 13.0 || rowspan="10" width="180" | U+1FB00..1FB92, 1FB94..1FBCA, 1FBF0..1FBF9 || rowspan="10" | 212 || {{nobr|[https://www.unicode.org/L2/L2017/17435r-terminals-prop.pdf L2/17-435R]}} || || {{Citation |title=Proposal to add characters from legacy computers and teletext to the UCS |date=2018-04-23 |author-first1=Doug |author-last1=Ewell |author-link1=Doug Ewell |author-first2=Rebecca |author-last2=Bettencourt |author-link2=Rebecca G. Bettencourt |author-first3=Michael |author-last3=Everson |author-link3=Michael Everson |author-first4=Eduardo Marín |author-last4=Silva |author-first5=Elias |author-last5=Mårtenson |author-first6=Mark |author-last6=Shoulson |author-first7=Shawn |author-last7=Steele |author-first8=Rebecca |author-last8=Turner|ref=none}}

|-

| {{nobr|[https://www.unicode.org/L2/L2018/18039-script-adhoc-rec.pdf L2/18-039]}} || || {{Citation |title=Recommendations to UTC #154 January 2018 on Script Proposals |date=2018-01-19 |author-first1=Deborah |author-last1=Anderson |author-first2=Ken |author-last2=Whistler |author-first3=Roozbeh |author-last3=Pournader |author-first4=Lisa |author-last4=Moore |author-first5=Hai |author-last5=Liang |author-first6=Richard |author-last6=Cook |ref=none|section=26}}

|-

| {{nobr|[https://www.unicode.org/L2/L2018/18235-terminals-prop.pdf L2/18-235 (full],}} [https://www.unicode.org/L2/L2018/18235-terminals-prop-no-attachments.pdf no_attach], [https://www.unicode.org/L2/L2018/18235-aux-LegacyComputingSources.pdf sources], [https://www.unicode.org/L2/L2018/18235-aux-mappings.zip mappings_zip]) || || {{Citation |title=Proposal to add characters from legacy computers and teletext to the UCS |date=2018-07-20 |author-first1=Doug |author-last1=Ewell |author-link1=Doug Ewell |author-first2=Rebecca |author-last2=Bettencourt |author-link2=Rebecca G. Bettencourt |author-first3=Ricardo |author-last3=Bánffy |author-first4=Michael |author-last4=Everson |author-link4=Michael Everson |author-first5=Eduardo Marín |author-last5=Silva |author-first6=Elias |author-last6=Mårtenson |author-first7=Mark |author-last7=Shoulson |author-first8=Shawn |author-last8=Steele |author-first9=Rebecca |author-last9=Turner|ref=none}}

|-

| {{nobr|[https://www.unicode.org/L2/L2018/18241-script-ad-hoc.pdf L2/18-241]}} || || {{Citation |title=Recommendations to UTC # 156 July 2018 on Script Proposals |date=2018-07-25 20|author-first1=Deborah |author-last1=Anderson |display-authors=etal |ref=none|section=19}}

|-

| {{nobr|[https://www.unicode.org/L2/L2018/18275r-terminals-prop.pdf L2/18-275R (full],}} [https://www.unicode.org/L2/L2018/18275r-terminals-prop-no-attachments.pdf no_attach], [https://www.unicode.org/L2/L2018/18275r-aux-LegacyComputingSources.pdf sources], [https://www.unicode.org/L2/L2018/18275r-aux-mappings.zip mappings_zip]) || || {{Citation |title=Proposal to add characters from legacy computers and teletext to the UCS |date=2018-09-06 |author-first1=Doug |author-last1=Ewell |author-link1=Doug Ewell |author-first2=Rebecca |author-last2=Bettencourt |author-link2=Rebecca G. Bettencourt |author-first3=Ricardo |author-last3=Bánffy |author-first4=Michael |author-last4=Everson |author-link4=Michael Everson |author-first5=Eduardo Marín |author-last5=Silva |author-first6=Elias |author-last6=Mårtenson |author-first7=Mark |author-last7=Shoulson |author-first8=Shawn |author-last8=Steele |author-first9=Rebecca |author-last9=Turner|ref=none}}

|-

| {{nobr|[https://www.unicode.org/L2/L2018/18300-script-ad-hoc-rec.pdf L2/18-300]}} || || {{Citation |title=Recommendations to UTC #157 on Script Proposals |date=2018-09-14 |author-first1=Deborah |author-last1=Anderson |display-authors=etal |ref=none|section=11}}

|-

| {{nobr|[https://www.unicode.org/L2/L2019/19025-terminals-prop.pdf L2/19-025 (full],}} [https://www.unicode.org/L2/L2019/19025-terminals-prop-no-attachments.pdf no_attach], [https://www.unicode.org/L2/L2019/19025-aux-LegacyComputingSources.pdf sources], [https://www.unicode.org/L2/L2019/19025-aux-mappings.zip mappings_zip]) || [https://www.unicode.org/wg2/docs/n5028-19025-terminals-prop.pdf N5028] || {{Citation |title=Proposal to add characters from legacy computers and teletext to the UCS |date=2019-01-04 |author-first1=Doug |author-last1=Ewell |author-link1=Doug Ewell |author-first2=Rebecca |author-last2=Bettencourt |author-link2=Rebecca G. Bettencourt |author-first3=Ricardo |author-last3=Bánffy |author-first4=Michael |author-last4=Everson |author-link4=Michael Everson |author-first5=Eduardo Marín |author-last5=Silva |author-first6=Elias |author-last6=Mårtenson |author-first7=Mark |author-last7=Shoulson |author-first8=Shawn |author-last8=Steele |author-first9=Rebecca |author-last9=Turner|ref=none}}

|-

| {{nobr|[https://www.unicode.org/L2/L2019/19047-script-adhoc-recs.pdf L2/19-047]}} || || {{Citation |title=Recommendations to UTC #158 January 2019 on Script Proposals |date=2019-01-13 |author-first1=Deborah |author-last1=Anderson |display-authors=etal |ref=none|section=24}}

|-

| {{nobr|[https://www.unicode.org/L2/L2019/19008.htm L2/19-008]}} || || {{Citation |title=UTC #158 Minutes |date=2019-02-08 |author-first=Lisa |author-last=Moore |ref=none|section=E.2}}

|-

| {{nobr|[https://www.unicode.org/L2/L2020/20015.htm L2/20-015015R]}} || || {{Citation |title=Draft Minutes of UTC Meeting 162 |date=2020-0105-23 14|author-first=Lisa |author-last=Moore |ref=none|section=B.10.17.2}}

|-

| rowspan="4" | 16.0 || rowspan="4" | U+1FBCB..1FBEF || rowspan="4" | 37 || {{nobr|[https://www.unicode.org/L2/L2021/21235-terminals-supplement.pdf L2/21-235 (full],}} [https://www.unicode.org/L2/L2021/21235-terminals-supplement-noattach.pdf no_attach], [https://www.unicode.org/L2/L2021/21235-terminals-supplement-sources.pdf sources], [https://www.unicode.org/L2/L2021/21235-terminals-supplement-mappings.zip mappings_zip]) || || {{Citation|title=Proposal to add further characters from legacy computers and teletext to the UCS|date=2021-12-20|first1=Rebecca|last1=Bettencourt|first2=Doug|last2=Ewell|first3=Ricardo|last3=Bánffy|first4=Michael|last4=Everson|first5=Jarkko|last5=Hietaniemi|first6=Eduardo Marín|last6=Silva|first7=Elias|last7=Mårtenson|first8=Mark|last8=Shoulson|first9=Shawn|last9=Steele|first10=Rebecca|last10=Turner|ref=none}}

|-

| {{nobr|[https://www.unicode.org/L2/L2022/22023-script-adhoc-rept.pdf L2/22-023]}} || || {{Citation|title=Recommendations to UTC #170 January 2022 on Script Proposals|date=2022-01-22|first1=Deborah|last1=Anderson|first2=Ken|last2=Whistler|first3=Roozbeh|last3=Pournader|first4=Peter|last4=Constable|ref=none|section=17 Legacy Computing Symbols}}

|-

| {{nobr|[https://www.unicode.org/L2/L2021/21235r-terminals-supplement.pdf L2/21-235R (full],}} [https://www.unicode.org/L2/L2021/21235r-terminals-supplement-noattach.pdf no_attach]) || || {{Citation|title=Proposal to add further characters from legacy computers and teletext to the UCS|date=2022-01-26|first1=Rebecca|last1=Bettencourt|first2=Doug|last2=Ewell|first3=Ricardo|last3=Bánffy|first4=Michael|last4=Everson|first5=Jarkko|last5=Hietaniemi|first6=Eduardo Marín|last6=Silva|first7=Elias|last7=Mårtenson|first8=Mark|last8=Shoulson|first9=Shawn|last9=Steele|first10=Rebecca|last10=Turner|ref=none}}

|-

| {{nobr|[https://www.unicode.org/L2/L2022/22016.htm L2/22-016]}} || || {{Citation|title=UTC #170 Minutes|date=2022-04-21|first=Peter|last=Constable|ref=none|section=D.1 17 Legacy Computing Symbols}}

|- class="sortbottom"

| colspan="6" | {{reflist|group=lower-alpha|refs=<ref name="final">Proposed code points and characters names may differ from final code points and names</ref>}}

|}

==See also==

* [[Box-drawing characters]]

* [[Supplemental Arrows-C]] Unicode block characters {{unichar|1F8B0|ARROW POINTING UPWARDS THEN NORTH WEST}} and {{unichar|1F8B1|ARROW POINTING RIGHTWARDS THEN CURVING SOUTH WEST}}

* [[Block ElementsDingbat]]

* other Unicode blocks

** [[Box Drawing]]

** [[Block Elements]]

** [[Geometric Shapes (Unicode block)|Geometric Shapes]]

** [[Halfwidth and Fullwidth Forms (Unicode block)|Halfwidth and Fullwidth Forms]]

** [[Supplemental Arrows-C]]

** [[Symbols for Legacy Computing Supplement]]

==References==

{{reflist}}

== External links ==

* [https://devblogs.microsoft.com/commandline/cascadia-code-2404-23/ Cascadia Code 2404.23] &ndash; release notes for [[Cascadia Code]], which shows the rendering of Symbols for Legacy Computing Supplement characters

[[Category:Unicode blocks]]