Diablo Data Systems
Diablo Data Systems was a division of Xerox created by the acquisition of Diablo Systems Inc. for US$29 million in 1972, a company which had been founded in 1969 by George E. Comstock, Charles L. Waggoner and others.
The company was best known for the HyType I and HyType II typewriter-based computer terminals, the Diablo 630 daisywheel printers, as well as removable hard disk drives that were used in the Xerox Alto computer and resold by DEC as the RK02 and RK03.