Western Digital Corporation, originally called General Digital Corporation, was founded in California on April 23, 1970 by Alvin B. Phillips. Mr. Phillips had 20 years of semi-conductor experience, which included setting up IC facilities for Motorola.
They rapidly became the largest independent manufacturer of calculator chips in the world, one million chips by 1975. Original officers of the company include Mr. Phillips, Mr. Larry Alves, Mr. Albert Dall, Mr. Henry Rodeen, Mr. Richard Sirrine and Mr. Joseph Baia. During the early Eighties, Western Digital shifted its focus to the newly emerging PC market.
Source : Joerg Woerner, Datamath Calculator Museum