Reynold B. Johnson

Computer Scientist

Birthday July 16, 1906

Birth Sign Cancer

Birthplace Minnesota

DEATH DATE Sep 15, 1998 (92)

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About

Inventor and computer pioneer who invented the first computer hard disk drive while working for IBM in 1956. He also invented the videocassette tape while worming for Sony.

Before Fame

He developed the technology to convert pencil-marked card to be converted to punch cards readable by computers, which became popular in both the private and public sector businesses.

Trivia

The first disk drive he built was made up of 50 double-sided magnetic disks, each 24 inches in diameter, and together weighing a ton; it stored 5 megabytes of data.

Family Life

He had a daughter and two sons with his wife, Beatrice.

Associated With

President Ronald Reagan awarded him the the National Medal of Technology in 1986 .