HP-9199A

[Steve Simpkin]

There is a small reference to a Fairchild chip set in the following history of the HP-35.

"Cochran found a four-function serial-bit chip set by Fairchild that he thought he could use. He asked if they would make some modifications, but Fairchild, then the largest semiconductor manufacturer in the world, wasn’t interested. They did, however, tell him that he could use the design. After all, they had gotten it from Sweda, a cash register company."

The HP-35 Consumer Electronics, an Origin Story