My life’s work started with a 4-bit microprocessor

Abstract

This article is a record of my education and research on microelectronics for 35 years at Sendai National College of Technology. At the end of 1971, Intel Co. Ltd. proposed a 4-bit microprocessor. Subsequent developments in micro-electronics have continued remarkably to this day. I had the opportunity to do research on it from the time microelectronics sprouted. The process of trial and error for my 35 years of education and research is described.