The 9100A was a product of a time when HP was still innovating. The company was barely 30 years old that year, and it would follow up their newborn PC with other firsts in personal computing.

Hewlett-Packard purchased a new recreation area 21 miles west of Loveland with its entrance off of U.S. 34 at Loveland Heights. ... the 9100A, was done at the Loveland site.

This makes me feel old. As Steve Leibson reports, “This year marks the 40th anniversary of HP’s entry into the calculator market…. First came the HP 9100A (with no ICs except in the magnetic card ...