Philip Don Estridge


1937 – 1985


Who was Philip Don Estridge?

Philip Donald Estridge, known as Don Estridge, led development of the original IBM Personal Computer, and thus is known as "father of the IBM PC". His decisions dramatically changed the computer industry, resulting in a vast increase in the number of personal computers sold and bought, thus creating an entire industry of hardware manufacturers of IBM PCs.

Estridge was born in Jacksonville, Florida. His father was a professional photographer. He graduated from Bishop Kenny High School in 1955, and from the University of Florida in 1959. He married Mary Ann Hellier in September, 1958, and they had three children: Patricia Ann, Mary Evelyn and Sandra Marie.

He completed a bachelor's degree in electrical engineering at the University of Florida, and worked at the Army, designing a radar system using computers, IBM and finally NASA's Goddard Space Flight Center until he moved to Boca Raton, Florida in 1969.

Before being the leader of the team to develop the IBM PC he had been the lead manager for the development of the IBM Series/1 mini-computer. After this project was unsuccessful, he was said to have fallen out of grace with IBM and was reassigned to headquarters staff - a position that IBM employees often considered a form of penalty.

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Jun 23, 1937
  • United States of America
  • University of Florida
  • Bishop Kenny High School
  • IBM
Lived in
  • Jacksonville
Aug 2, 1985
Dallas/Fort Worth International Airport

on July 23, 2013


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