Editing APEXC (section)

==ARC and SEC==
Booth designed an electromechanical computer, the [[Automatic Relay Computer|ARC]] (Automatic Relay Computer), in the late 1940s (1947-1948).<ref>{{Cite book|url=https://books.google.com/books?id=AU28AAAAIAAJ&q=%22Automatic+Relay+Computer%22+booth&pg=PA62|title=Early British Computers: The Story of Vintage Computers and the People who Built Them|last=Lavington|first=Simon Hugh|date=1980|publisher=Manchester University Press|isbn=9780719008108|pages=62|language=en}}</ref> Later on, they built an experimental electronic computer named SEC ([[Simple Electronic Computer]], designed around 1948-1949) - and finally, the APE(X)C (All-Purpose Electronic Computer) series.<ref name=":0">{{cite web|url=http://www.dcs.bbk.ac.uk/site/assets/files/1029/50yearsofcomputing.pdf|title=School of Computer Science & Information Systems: A Short History|last1=Johnson|first1=Roger|date=April 2008|website=Birkbeck College|publisher=University of London|pages=5–8|access-date=22 November 2018}}</ref><ref>{{Cite journal|date=1950|title=Automatic Computing Machinery: Bibliography Z-XII; 3. Anon., ''Digital Computer Research at Birkbeck College'', Office of Naval Research (London Branch), ''Technical Report'' OANAR-50-49, 12 December 1949, 2 p.|journal=Mathematics of Computation|language=en-US|volume=4|issue=31|pages=171|doi=10.1090/S0025-5718-50-99462-2|issn=0025-5718|doi-access=free}}</ref><ref>{{Cite journal|date=1950-01-01|title=11. Digital Computers, Birkbeck College, University of London|url=https://apps.dtic.mil/sti/citations/AD0694596|archive-url=https://web.archive.org/web/20210311004157/http://www.dtic.mil/docs/citations/AD0694596|url-status=live|archive-date=March 11, 2021|journal=Digital Computer Newsletter|language=en|volume=2|issue=1|pages=4}}</ref> 

The computers were programmed by Kathleen.<ref name=":0" />