HP-80
The tool is the HP-80 electronic answer-machine that weighs only nine ounces (you can take it anywhere you go—and should), and replaces stacks of tricky tables and other such "inundata". It is the first pocket calculator to offer built-in logic for solving business-oriented problems.
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HP Series 80 - Wikipedia
The Hewlett-Packard Series 80 of small scientific desktop computers was introduced in 1980, beginning with the popular HP-85 targeted at engineering and control applications. They provided the capability of the HP 9800 series desktop computers with an integrated monitor in a smaller package including storage and printer, at half the price.
HP 80X 2-pack High Yield Black Original LaserJet Toner Cartridges, …
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HP-80 History, Design and Interesting Facts
The HP-80 does not have a single CPU but contains five MOS/LSI (metal-oxide-semiconductor, large-scale-integration) circuits made up of seven read-only-memories (ROMs), an arithmetic and register circuit (A&R), and a control and timing circuit (C&T). The logic design was done by HP and the circuits were developed and manufactured by two outside ...
HP 80 Toner Cartridges for LaserJet | HP® Store
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Ink Cartridges for Printers | Genuine HP® Supplies | HP® Store
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HP-80 History, Design and Interesting Facts
While the HP-35 was the first scientific pocket calculator, the HP-80, introduced a year later was the first financial calculator of any size (that I know of) and probably the first calculator to have any type of solver (in this case for the time value of money calculations).
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HP-80 Owner's Handbook - HP Calculator Literature
Free download of a color scan of the English-language book 'HP-80 Owner's Handbook' by Hewlett-Packard, which is an owner's manual (user's guide, operating manual, owner handbook) for the HP-80 calculator.
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