While low in price, the HP-31E still managed to provide some new features over its low-end predecessors including:
'The HP-31E is another professional-quality personal product from the Hewlett-Packard line of calculators--calculators whose durability, size and ease of operation have made them the choice for use by climbers on Mt. Everest and astronauts in outer space. Doctors, engineers, scientists, and other people who require instant answers to complex highly technical problems use Hewlett-Packard calculators. You're in good company with HP!'
Front view (~62K)
Three quarter view (~84K)
30 series rear view (~31K)
Technology and Packaging
Dimensions and Weight
????appGo back to the main exhibit hall
Next Calculator Made
????appPrevious Calculator Made
????app ??4+1?? AG?? ????? ????