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95:. 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.
141:. Inputs to the system included the primary flight controls, a number of switches, static and dynamic air pressure (for calculating stall points and aircraft speed) and a temperature gauge. The outputs controlled the wing sweep and the maneuver flaps and slats and limited allowable control inputs.
160:(ROM) (14-pin DIP), the special logic function (SLF) (28-pin DIP), and the steering logic unit (SLU) (28-pin DIP). The complete system of 28 circuits consists of 1 PMU, 1 PDU, 1 SLF, 3 RASs, 3 SLUs, and 19 ROMs, enabled by 74,442 transistors.
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systems that had also been designed for the F-14. It was classified by the Navy until 1998. Ray Holt's story of this design and development is presented in his autobiography
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The CADC's MP944 chip set ran at 375 kHz, executing 9375 instructions per second. It contained six chips used to build the CADC, all based on a 20-bit
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Human Bond
Communication: The Holy Grail of Holistic Communication and Immersive Experience
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The MP944 chip set was the core of the CADC used to control the swing wings of the
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315:"Ray Holt and the history of MP944/Cadc @ Rome Technopole, 2017 - YouTube"
91:. The first microprocessor existing on a single chip was the contemporary
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A Garrett-manufactured F-14A dual channel central air data computer (CADC)
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and temperature. From 1968 to 1970, the first CADC to use custom digital
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number system. They were the parallel multiplier unit (PMU) in a 28-pin
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The CADC was a multi-chip integrated flight control system developed by
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303:. Department of the Navy. 15 Jan 2004. pp. 11–1, 20–6, 14–42.
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The CADC was designed and built by a team led by Steve Geller and
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1971 paper on the CADC (which was classified and never published)
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The Secret
History of the First Microprocessor, the F-14, and Me
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custom integrated circuits and has been claimed as the first
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In 1971, Holt wrote an article about the system for
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297:NATOPS Flight Manual Navy Model F-14D Aircraft
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191:. DIANE Publishing. Oct 1, 1987. p. 63.
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137:pressure sensors, and a number of MOS-based
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83:fighter. It is notable for early use of
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16:Early flight control computer using MOS
551:Computer-related introductions in 1970
256:Dixit, Sudhir; Prasad, Ramjee (2017).
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217:Holt, Raymond; Sorge, Leo (2017).
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47:from sensor inputs such as
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484:Central Air Data Computer
129:The CADC consisted of an
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458:Bunker Ramo Corporation
220:The Accidental Engineer
124:The Accidental Engineer
556:Flight control systems
468:William Ripley Nichols
437:Solvay Process Company
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175:References
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139:microchips
133:, several
93:Intel 4004
525:Honeywell
509:Normalair
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323:Archived
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112:Ray Holt
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67:History
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