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Field of Work and Interesting Factoids

Don Estridge got his degree in electrical engineering, and his field of work was computer science. Don's work revolutionized the study of computer science, because now people had personal computers in their homes and could put them together. This interested many people on various levels about the aspects of computers.

Factoids!

-Don's team developed the IBM PC secretly, and it was not announced until August 12, 1981.

-He only lived to be 48 years old.

-Philip Donald Estridge was born here in Jacksonville, but died in Dallas, TX

-To invent the IBM PC, IBM created 3 secret research teams who competed against each other. Don led the winning team.

-The PC's cost was relatively low in comparison to historic computers.

-The first estimated selling of the PC was 250,000 units over a duration of three years.

Failures and Resilience

"Don was very humane, with a wonderful sense

of humor and a charming personality. He

combined a manic drive with tremendous respect

for his people, recognizing all they were sacrificing

during the PC project."

-Jan Winston

Neighbor and colleague of Don

Don Estridge was the first the leader of a team to develop the IBM mini-computer. This project was unsuccessful, and Don "fell out of grace" with IBM and was reassigned to head quarter staff. He considered this a "punishment" on IBM's part, so he was determined come back and develop the PC in 1980.

The Life of Philip Donald Estridge From Young Boy to Engineer.

Don Estridge was born June 23, 1937 and was killed in a fatal plane crash on August 2, 1985

What inspired him?

1937-1951

1981-1983

1963-1969

On June 23, 1937, Philip Donald Estridge was born in Jacksonville, Florida. His father was working as a professional photographer

From 1942- 1951, Don attended St. Paul's School from Kindergarten through the Eighth grade in Jacksonville, Florida.

In 1963, Estridge moved to Washington. Don worked on the programming support for NASA and the Goddard Space Flight Center.

In 1969, Estridge and his family moved to Boca Raton, Florida. He joined the General Systems Division and from 1975-1979 he worked on the IBM series 1, which was a mini computer. He was the programming manager.

In January of 1981, Estridge's organization expanded from 12 people to 135. In July, Don was appointed as the director of Entry Systems Business and he was responsible for IBM's Personal Computer (PC). The PC was ready in 18 months! In order to invent the IBM PC, IBM created three research teams that were led by Don. Additionally, his team examined every item produced by other microcomputer companies. Don was even offered a job at Apple but declined. Don's team developed the PC secretly and did not announce it publicly until August 12, 1981.

In January, 1982, Estridge was appointed division director of Entry Systems Business Unit. In March, Estridge became vice president and general manger of Entry Systems.

In August, 1983, Don became President of the newly formed Entry Systems Division. Steve Jobs offered Don Estridge the position of President of Apple Computer for millions of dollars, but Don declined.

1951-1959

1984-1985

1979-1980

1981-1983

1963-1969

1937-1951

1979-1980

1951-1959

1984-1985

In 1979, Don had the responsibility for the development of an IBM Series 1 product until 1980.

Excerpt From IBM about Series 1:

"Announced by IBM's General Systems Division (GSD) on November 16, 1976, the IBM Series/1 was a small, general purpose computing system offering both communications and sensor-based capabilities. It also allowed users to attach a large number and variety of input and output devices, including custom-built devices for special application requirements."

In 1980, Don became a manager for the Entry Level Systems in Boca Raton, Florida. He was responsible for the small microprocessor, which based systems for limited business and personal use.

An account on the Systems: "At the end of 1980, IBM decided to truly compete in the rapidly growing low-cost personal computer market. The Company established... the Entry Systems Division...to develop the new system. This small group consisted of 12 engineers and designers under the direction of Don Estridge...The division developed IBM's first real PC." The PC was now a programmable machine versus a real computer. In 1980, the introduction of the small office computer was a sufficient technological advantage after the PC.

In January, 1984, Don Estridge became the IBM Vice President. Vast amount of PCs were sold.

In March, 1985, Don Estridge also was placed in charge of manufacturing. On August 2, Don and his wife Mary Ann died in a plane crash near Dallas, Texas. The first IBM personal computer fair was held in San Francisco and celebrated and honored Philip Donald Estridge.

In 1955, Estridge graduated from Bishop Kenny High School in Jacksonville, Florida. The same year, Estridge began his college path at the University of Florida.

In 1958, Estridge got married to Mary Ann Hellier on September, 13. Three children were born from this marriage: Patricia Ann, Mary Evelyn, and Sandra Marie.

In 1959, Don completed a Bachelor of Science degree in electrical engineering at the University of Florida. Later that year, Estridge joined IBM (International Business Machines) as a junior engineer in Kingston, New York. He held positions in the Federal Systems Division.

Philip "Don" Estridge was a man who is one of the rather unheard of contributors in the history of computers. Don's father was a photographer, meaning Don grew up in the heightening popularity of modern technology of his time. This aspect of his life as a child may have had a major impact on his contributions to the development of computers and developing the IBM PC with 12 other engineers.

The Life and Success of Philip Donald Estridge

Greatest Accomplishments

Don Estridge was mostly known and most accomplished in his work as the IBM Vice President and development of the IBM PC (IBM Personal Computer) which changed the way people interacted with modern computers. Not only was the IBM PC the first widely selling computer used in businesses, it was also a personal computer for people to use; it was developed shortly after the invention of the MITS Altair and Birth of Personal Computers. Don's accomplishments were very prominent, but he did not receive any personal awards. Although Don did not receive any personal awards, he was remembered for doing a wonderful job of exerting his executive leadership when the PC project first took off.

IBM PC:

4.77 Mhz Processing Speed

8088 Microchip/ 29000 transistors

256K Random Access Memory

1 0r 2 floppy disk drives

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