Lee Boysel

Lee Boysel
Born(1938-12-31)December 31, 1938
DiedApril 25, 2021(2021-04-25) (aged 82)
EducationMSEE 1963
BSEE 1962
Alma materUniversity of Michigan
Occupation(s)Entrepreneur
Business executive
Electrical engineer
Investor
Known forFounder of Four-Phase Systems, Inc.
AwardsUniversity of Michigan Electrical & Computer Engineering Merit Award (2007)

Lee Boysel (December 31, 1938 – April 25, 2021[1]) was an American electrical engineer and entrepreneur. While at Fairchild Semiconductor, he developed four-phase logic and built the first integrated circuit with over 100 logic gates, and designed the Fairchild 3800 / 3804 8-bit ALUs.[2] Boysel designed the Four-Phase Systems AL1.[3] He founded Four-Phase Systems to commercialize the technology, and sold the company to Motorola in 1981.

He was a graduate of the University of Michigan.

Litigation

Texas Instruments claimed to have patented the microprocessor and, in response, Boysel assembled a system in which a single 8-bit AL1 was used as part of a courtroom demonstration computer system, together with ROM, RAM and an input-output device.[4]

References

  1. ^ "Lee Boysel: In Memoriam (12/31/1938 – 4/25/2021)". Electrical and Computer Engineering, University of Michigan. May 24, 2021.
  2. ^ "1971: MICROPROCESSOR INTEGRATES CPU FUNCTION ONTO A SINGLE CHIP". Computer History Museum.
  3. ^ "Microprocessor Stories: Four-Phase Systems AL1". 2011 – via Computer History Museum.
  4. ^ Boysel, Lee (April 3, 1995). "Court room demonstration system 1969 AL1 microprocessor" (PDF) – via Computer History Museum.


Stub icon

This article about an American electrical engineer is a stub. You can help Wikipedia by expanding it.