Editing Automatic Computing Engine (section)

== MOSAIC ==

A second implementation of the ACE design was the MOSAIC (Ministry of Supply Automatic Integrator and Computer). This was built by [[Allen Coombs]] and William Chandler of Dollis Hill who had worked with [[Tommy Flowers]] on building the ten Colossus computers. It was installed at the [[Radar Research and Development Establishment]] (RRDE) at Malvern, which later merged with the [[Telecommunications Research Establishment]] (TRE) to become the [[Royal Radar Establishment]] (RRE). It ran its first trial program in late 1952 or early 1953 and became operational in early 1955. MOSAIC contained 6,480 electronic valves and had an availability of about 75%. It occupied four rooms and was the largest of the early British computers. It was used to calculate aircraft trajectories from radar data. It continued operating until the early 1960s.<ref name=mraths-2016>{{cite web |url=http://mraths.org.uk/?page_id=582 |title=1952 - A Computer comes to Malvern Vale |author=M G Hutchinson |publisher=Malvern Radar and Technology History Society |year=2016 |access-date=25 July 2017}}</ref><ref>[http://www.alanturing.net/turing_archive/archive/index/mosaicindex.html "Catalogue: The MOSAIC Computer"]</ref><ref>{{Cite book|url=https://books.google.com/books?id=Tg0WXU5_8EgC&dq=MOSAIC+computer+1952&pg=PA173|title=Kurt Gödel and the Foundations of Mathematics: Horizons of Truth|last1=Baaz|first1=Matthias|last2=Papadimitriou|first2=Christos H.|last3=Putnam|first3=Hilary W.|last4=Scott|first4=Dana S.|last5=Jr|first5=Charles L. Harper|date=2011-06-06|publisher=Cambridge University Press|isbn=9781139498432|pages=173|language=en}}</ref>