Lee Boysel

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Lee Boysel
EducationMSEE
BSEE
Alma materUniversity of Michigan
OccupationEntrepreneur
Business Executive
Electrical Engineer
Investor
Known forFounder of Four-Phase Systems, Inc.

Lee Boysel (31. december 1938 – 25. april 2021[1]) was an American engineer, and entrepreneur. While at Fairchild Semiconductor, he developed four-phase logic and built the first integrated circuit with over 100 logic gates and one of the earliest microprocessors, the Four Phase Systems AL1. He founded Four-Phase Systems to commercialize the technology, and sold the company to Motorola in 1981. Boysel is a graduate of the University of Michigan.

Patent litigation with Texas Instrument[]

Texas Instruments claimed to have patented the microprocessor, and Lee Boysel in response 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.[2]

References[]

  1. ^ "Lee Boysel: In Memoriam (12/31/1938 – 4/25/2021)".
  2. ^ "Catalog Search | Computer History Museum" (PDF).


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