Editing 1983 in science (section)

==Computer science==
* January 1 – The [[ARPANET]] officially changes to use the [[Internet Protocol]], creating the Internet.
* August – Specification for a [[MIDI|Musical Instrument Digital Interface]] (originally devised by [[Dave Smith (engineer)|Dave Smith]] of [[Sequential Circuits]]) published.<ref>{{cite journal|last=Chadabe|first=Joel|author-link=Joel Chadabe|date=2000-05-01|title=The Electronic Century, Part IV: The Seeds of the Future|journal=Electronic Musician|publisher=Penton Media|volume=16|issue=5|url=http://www.emusician.com/gear/0769/the-electronic-century-part-iv-the-seeds-of-the-future/145415|access-date=2012-11-28|archive-url=https://web.archive.org/web/20120928230435/http://www.emusician.com/gear/0769/the-electronic-century-part-iv-the-seeds-of-the-future/145415|archive-date=September 28, 2012|url-status=dead|df=mdy-all}}</ref>
* September 27 – [[Richard Stallman]] announces the [[GNU Project]].<ref>On the net.unix-wizards and net.usoft [[newsgroup]]s.</ref>
* October 25 – [[Word processor]] software ''Multi-Tool Word'', soon to become [[Microsoft Word]], is released.<ref>{{cite book|first=Roy A.|last=Allen|title=A History of the Personal Computer: the People and the Technology|year=2001|publisher=Allan Publishing|isbn=978-0-9689108-0-1|url=https://archive.org/details/A_History_of_the_Personal_Computer|chapter=Chapter 12: Microsoft in the 1980s|chapter-url=https://archive.org/download/A_History_of_the_Personal_Computer/eBook12.pdf|pages=12/25–12/26|access-date=2010-11-07}}</ref><ref>{{cite web|url=http://office.microsoft.com/en-us/help/HA101996251033.aspx |title=Microsoft Office online, Getting to know you...again: The Ribbon|access-date=2011-06-08|archive-url=https://web.archive.org/web/20110511074037/http://office.microsoft.com/en-us/help/HA101996251033.aspx|archive-date=2011-05-11|url-status=dead}}</ref><ref>{{cite web|url=http://www.historyofbranding.com/microsoft.html|title=The history of branding, Microsoft history|access-date=2011-06-08|url-status=dead|archive-url=https://web.archive.org/web/20090528002301/http://www.historyofbranding.com/microsoft.html|archive-date=2009-05-28}}</ref> It is primarily the work of programmers [[Richard Brodie (programmer)|Richard Brodie]] and [[Charles Simonyi]]. Free demonstration copies on disk are distributed with the November issue of ''[[PC World (magazine)|PC World]]'' magazine.<ref>{{cite news|first=Andrew|last=Pollack|title=Computerizing Magazines|newspaper=[[The New York Times]]|date=1983-08-25|url=https://www.nytimes.com/1983/08/25/business/technologyandrew-pollack-computerizing-magazines.html|access-date=2011-06-08|archive-url=https://web.archive.org/web/20110512095456/http://www.nytimes.com/1983/08/25/business/technologyandrew-pollack-computerizing-magazines.html|archive-date=2011-05-12|url-status=live}}</ref>
* November 10 – [[Fred Cohen]] demonstrates a self-replicating [[source code]] which his academic adviser at the [[University of Southern California]], [[Leonard Adleman]], likens to a [[Computer virus|virus]].<ref>{{cite magazine|title=This Day in Tech – Nov. 10, 1983: Computer 'Virus' Is Born|url=https://www.wired.com/thisdayintech/2009/11/1110fred-cohen-first-computer-virus/|first=Kim|last=Zetter|author-link=Kim Zetter|date=2009-11-10|access-date=2012-01-28|magazine=[[Wired (magazine)|Wired]]}}</ref>
* December – [[SFRY|Yugoslav]] popular science magazine ''Galaksija'' releases a special (January 1984) issue, "Računari u vašoj kući", with complete instructions on how to build a full-featured home computer, [[Galaksija (computer)|Galaksija]].
* The [[suffix automaton]] data structure is introduced.<ref>{{cite book|first1=Maxime |last1=Crochemore |first2=Renaud |last2=Vérin |year=1997 |chapter=On compact directed acyclic word graphs |title=Structures in Logic and Computer Science |series=Lecture Notes in Computer Science |volume=1261 |pages=192–211 |doi=10.1007/3-540-63246-8_12 |isbn=978-3-540-69242-3}}</ref>
* The [[US Federal Government]] standardizes [[Ada (programming language)]], a strongly typed, comb-structured [[computer language]], with [[exception handler]]s, for general-purpose programming.