31977: HP-01 Wrist Instrument:
HP’s longest and best-selling calculator. The HP-12C sold today acts and looks just as it did when first introduced in 1981, with the exception of improved performance due to modern components. Valued for its reliability, proven accuracy and long battery life, the HP-12C has become an industry standard in the business and finance community.
71991: HP 95LX palmtop computer:
Largely leveraging HP’s calculator technology, the HP 95LX had as much computing power as a desktop PC and was able to run many standard DOS programs. It had a financial calculator, telephone number/address program, simple text editor and infrared link for transferring data. Widely considered HP’s first PDA (personal digital assistant), it was the first palmtop PC with built-in Lotus 1-2-3.