The first calculator watch was also gold and went for almost $4,000. Soon, though, they brought out a stainless and a gold-filled version that came in at under $500. The HP-01 (photo: [Stanlkocher ...

How Did HP Become A Computer Company? HP started to move into the computing space in 1968 with the HP9100A scientific calculator, with advertisements for the product bringing the term "personal ...

In this presentation he walks us through the history of the calculator design and his efforts in understanding and eventually replicating it using modern FPGAs. The HP patent ( US Patent 4,001,569 ...