1. Clive Sinclair, father of the ZX80, ZX81 and ZX spectrum home computers - the first really affordable computers for the home - and a lot of other things too. My first scientific calculator. in 1977, was a Sinclair scientific.
2. Bernard Babani - founder of the publishing house that brought books on electronics to hobbyists, and helped a lot of young people - self included - get into eletrical engineering as a career.
I'm sorry, but is the "Android" you mentioned initially the Google OS? If so, then I really think you should replace that with Linus Torvalds, because he contributed much more to Android than Google, it's like saying a Philips or GE engineer was responsible for the light globe instead of Edison.
Fred Terman. One time dean of engineering at Stanford. Advisor to Hewlett and Packard. Textbook author. One of the main reasons Stanford was at the center of so many engineering accomplishments at the birth of silicon valley.
What about Adam Osborne and Lee Felsenstein?
Before he founded Osborne computer, Adam Osborne published a series of books on microprocessors and their support chips.
Lee Felsenstein was the principal designer of the Osborne 1. His real interest was in using computers to allow people to connect to each other. I remember thinking back then that it was a very ambitious undertaking...
Don’t forget the father of the electronic digital computer J.V. Atanasoff and his grad student Clifford Berry. This story includes the wholesale theft of the IP, large scale corporate blackmail by a third party and ultimately, Berry’s murder. This invention drove the development of the transistor and everything that came after.