Distinctive features: The first hand-held calculator with business and finance functions.
Has functions for business and finance calculations, such as compound interest.
Display uses scientific notation, 10 digits mantissa, 2 digits exponent, red LED.
3.6v (3x AA rechargeable cells in a battery pack).
80 x 149 x 36 mm (3.2" x 5.9" x 1.4").
Launched in February 1973.
Made in USA.
Price on introduction US$395.
This was the first hand-held business & finance calculator and was the second Hewlett-Packard hand-held calculator.
Like the early HP-35 models, the early HP-80 models do not have the model number on the front label.
The early HP hand-held calculators were very expensive. Tough, fitted, plastic cases were available to protect them.
The HP-80 is described in detail in the Hewlett-Packard Journal of May 1973.
There is an enormous amount of information about the HP-80 gathered by David Hicks at the Museum of HP Calculators at http://www.hpmuseum.org/hp80.htm.
A Guide to HP Handheld Calculators and Computers
Revised Guide to HP Calculators Available
The fifth edition of Wlodek Mier-Jedrzejowicz's "A Guide to HP Handheld Calculators and Computers" has been published.
© Text & photographs copyright Nigel Tout 2000-2020 except where noted otherwise.