HPMUSEUM.ORG

The Museum of HP Calculators displays and describes Hewlett-Packard calculators introduced from 1968 to 1986 plus a few interesting later models. There are also sections on calculating machines and slide rules as well as sections for buying and selling HP calculators, an HP timeline, collecting information and a software library... (Includes everything from the earliest HPs to the HP Prime, plus the new articles forum, new software forums and classifieds.