HP-15C

The HP-15C calculator was produced by Hewlett-Packard from 1982 until it was discontinued in 1989. It had an original MSRP of $134.99. The 15C was part of HP’s Voyager line of calculators that began in 1981. The Voyager line, including the 15C, are all programmable calculators and use Reverse Polish …

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HP 35

This HP 35 was the first scientific pocket calculator and was introduced in 1972.  It stayed in production until 1975 and retailed at a price of $395.00. The 35 was allegedly a hack by an HP engineer of the HP 9100 which was a large desktop calculator with a price …

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HP 65

This fairly hard to find Hewlett Packard made HP 65 calculator was produced from 1974 up until 1977 and retailed for $795.00.  It was HP’s first programmable pocket calculator and had a built in magnetic card reader – writer.  It featured a single line red LED display and used RPN …

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Sanyo ICC-808D

This is a very rare Sanyo ICC-808D calculator. As you can see it utilizes nixie tubes (gas discharge tubes) for the display. It uses algebraic logic, has 4 functions and 18 keys. It was made in 1972 and has a level of popularity based not upon its calculating abilities nor …

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HP 70

This HP 70 is a fairly difficult calculator to find in good working condition. It is a business calculator that Hewlett Packard offered as a lower end choice to the HP 80.  As you can see it has a unique color scheme with the orange keys and green/gray case.  It …

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Sharp EL-5001

This is the Sharp EL-5001.  It is similar in appearance to Sharp’s first programmable calculator, the PC-1201, but is not actually programmable.  It was produced around 1977, is 6″ x 3″ x 1″, weighs 10 ounces and uses 2 AA batteries or Sharp’s EA-17E adapter.  It also has 10 digit …

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HP 11C

This is the HP 11C which was introduced to the calculator buying consumer in 1981 and was discontinued in 1989.  The 11C is a scientific programmable calculator and had a retail price of $135.00 though by 1989 its price had dropped to $56.00.  It featured a landscape liquid crystal display …

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