Editing F-14 CADC (section)

==History==
The CADC was a multi-chip integrated flight control system developed by [[Garrett AiResearch]] and used in early versions of the [[US Navy]]'s [[F-14 Tomcat]] fighter. It is notable for early use of [[metal–oxide–semiconductor|MOS]] custom integrated circuits and has been claimed as the first [[microprocessor]] [[chipset]].<ref name=holt/> The first commercial microprocessor chip was the contemporary [[Intel 4004]]. The 4004 did not have nearly the computing power or interfacing capability required to perform the functions of the CADC. At the time, the best integrated circuit (chip) technology available lacked the scale (number of transistors per chip) necessary to build a single-chip microprocessor for a flight control system.

[[File:F-14 Tomcat preparing to refuel.jpg|thumb|250px|The MP944 chip set was the core of the CADC used to control the swing wings of the [[F-14 Tomcat]] naval interceptor.]]

The CADC was designed and built by a team led by Steve Geller and [[Ray Holt (computer scientist)|Ray Holt]], and supported by the startup [[American Microsystems]]. Design work started in 1968 and was completed in June 1970, beating a number of [[electromechanical]] systems that had also been designed for the F-14.  It was classified by the Navy<ref>{{cite book |first1=Sudhir |last1=Dixit |first2=Ramjee |last2=Prasad |title=Human Bond Communication: The Holy Grail of Holistic Communication and Immersive Experience |date=2017 |publisher=9781119341338 |page=211 |isbn=9781119341338 |url=https://books.google.com/books?id=UW4lDgAAQBAJ&dq=%22ray+holt%22+%22microprocessor%22+classified&pg=PA211 |accessdate=2 June 2020 |archive-date=26 December 2020 |archive-url=https://web.archive.org/web/20201226121449/https://books.google.com/books?id=UW4lDgAAQBAJ&pg=PA211&dq=%22ray+holt%22+%22microprocessor%22+classified |url-status=live }}</ref> until 1998. Ray Holt's story of this design and development is presented in his autobiography ''The Accidental Engineer''.<ref name=holt/>

In 1971, Holt wrote an article about the system for ''Computer Design'' magazine.<ref name=":0">[https://firstmicroprocessor.com/wp-content/uploads/2020/02/ap1-26-97.pdf 1971 paper on the CADC (which was classified and never published)]</ref> The Navy [[Classified information in the United States|classified]] it, and released it in 1998.