Lee Boysel

Lee Loren Boysel (December 31, 1938 – April 25, 2021) 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. Boysel designed the Four-Phase Systems AL1. 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 with a BS and MS in Electrical Engineering.