John Blankenbaker made the prototype of the Kenbak-1 personal computer in his garage When the definitive history of the personal computer is written, familiar and historic names such as Olivetti, Apple, IBM, will all be given recognition for their innovations of the 1960s and 1970s. But will future generations remember visionary John Blankenbaker, and his ground-breaking invention, the Kenbak-1 Di