Editing Core rope memory (section)

{{Short description|Early form of read-only memory}}
{{Distinguish|magnetic-core memory}}
{{more footnotes|date=December 2017}}
{{memory types}}
{{multiple images
|perrow = 1
| align = right
|image1 = Agc rope.jpg
|caption1 =Rope memory from the [[Apollo Guidance Computer]]
|image2 = 16Kb Rope Core Memory Board from Wagner WAC-40.jpg
|caption2 = Photo detail of a 16Kb rope core memory board from a 1974 computer
|image3 = Apollo guidiance computer ferrit core memory.jpg
|caption3 =Core rope memory test sample from the [[Apollo program]]
}}
'''Core rope memory''' is a form of [[read-only memory]] (ROM) for [[computer]]s. It was used in the [[UNIVAC I]] (Universal Automatic Computer I) and the [[UNIVAC II]], developed by the [[Eckert-Mauchly Computer Corporation]] in the 1950s, as it was a popular technology for program and data storage in that era. It was later used in the 1960s by [[Mariner program|early NASA Mars space probe]]s and then in the [[Apollo Guidance Computer]] (AGC),<ref>{{cite web |url=https://spectrum.ieee.org/software-as-hardware-apollos-rope-memory|access-date=29 Sep 2017|title=Software as Hardware: Apollo's Rope Memory}}</ref> which was built by [[Raytheon]].

The software for the AGC was written by programmers at the [[Massachusetts Institute of Technology]] (MIT) [[Draper Laboratory|Instrumentation Lab]], and was woven into core rope memory by female workers in factories.<ref>{{cite episode |url=https://www.youtube.com/watch?v=ndvmFlg1WmE |title=Computer for Apollo |series=MIT Science Reporter |station=[[WGBH-TV|WGBH]] |date=1965}}</ref> Some programmers nicknamed the finished product ''LOL memory'', for ''Little Old Lady'' memory.<ref>{{cite episode | title        = The Navigation Computer| episode-link = Moon_Machines#Part_3:_the_navigation_computer| series       = Moon Machines| series-link  = Moon Machines| credits      = Directed and Produced by: Duncan Copp, Nick Davidson, [[Christopher Riley]] 	| network      = [[Science Channel]]| airdate      = 2008-07-07| number       = 3| minutes      = 22:40}}</ref>