Editing 1969 in science (section)

==Computer science==
* April 7 – {{IETF RFC|1}}, the first [[Request for Comments]] document from the [[Internet Engineering Task Force]], is published.
* October 29 – The first [[ARPANET]] message is sent, between computers at the [[University of California, Los Angeles]] (UCLA) and [[Stanford Research Institute]].<ref>{{cite news|title=Browsing history: A heritage site is being set up in Boelter Hall 3420, the room the first Internet message originated in|url=http://www.dailybruin.com/index.php/article/2011/04/browsing_history|first=Jessica|last=Savio|work=Daily Bruin|publisher=UCLA|date=2011-04-01|access-date=2012-10-29|archive-url=https://web.archive.org/web/20120105180925/http://www.dailybruin.com/index.php/article/2011/04/browsing_history|archive-date=2012-01-05|url-status=dead}}</ref>
* November 21 – The first permanent ARPANET link is established, between [[Interface Message Processor]]s at UCLA and Stanford.<ref>{{cite web|title=Internet Began 35 Years Ago at UCLA with First Message Ever Sent Between Two Computers|url=http://www.engineer.ucla.edu/stories/2004/Internet35.htm|first=Chris|last=Sutton|publisher=UCLA|date=2004-09-02|archive-url=https://web.archive.org/web/20080308120314/http://www.engineer.ucla.edu/stories/2004/Internet35.htm|archive-date=8 March 2008}}</ref>
* The [[B (programming language)|B]] programming language is developed at [[Bell Labs]] by [[Ken Thompson (computer programmer)|Ken Thompson]] and [[Dennis Ritchie]].
* [[Charge-coupled device|CCD]] invented at [[AT&T]] [[Bell Labs]], used as the electronic imager in still and video cameras.
* The [[laser printer]] is invented at [[Xerox]] by [[Gary Starkweather]].<ref>{{cite book|title=Milestones in Computer Science and Information Technology|first=Edwin D.|last=Reilly|publisher=Greenwood Press|year=2003|isbn=1-57356-521-0|url=https://archive.org/details/milestonesincomp0000reil|url-access=registration|page=[https://archive.org/details/milestonesincomp0000reil/page/152 152]|quote=starkweather laser-printer.}}</ref>
* Initial release of [[Multics]] ("Multiplexed Information and Computing Service"), an influential early [[time-sharing]] [[operating system]] based on the concept of a [[single-level store|single-level memory]].<ref name="Ritchie84">Dennis M. Ritchie, "The Evolution of the Unix Time-sharing System", Communications of the ACM, Vol. 17, 1984, pp. 365-375.</ref>