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Summit Ko9V, K16, & SE88M |
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Many Summit calculators used a very similar, small but chunky case, as in these examples. Illustrated here are: |
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Summit Ko9V Display is 8 digits, red LED. 4-functions, constant. The "D" key refreshes the display once it is automatically switched off after the calculator is unused for some time. 9v (PP3). 68 x 101 x 34 mm (2.7" x 4.0" x 1.4"). About 1973. Summit International Corp., Salt Lake City, Utah. One of the very small and distinctivly styled calculators from Summit, one of the smallest using the Texas Instruments "Klixon" keyboard common on early calculators. |
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With rear cover removed. |
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With rear cover removed, showing the six rechargeable cells. |
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Summit Ko9V / Citaco K16 Display is 8 digits, red LED. 4-functions, constant. The "D" key refreshes the display once it is automatically switched off after the calculator is unused for some time. 7.2v (6x AA rechargeable cells). 68 x 101 x 34 mm (2.7" x 4.0" x 1.4"). About 1973. This example with the Citaco name was obtained in Britain and is labelled: |
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Summit SE88M Display is 8 digits, red LED. 4-functions, %, memory, with reciprocal, square, square root on separate buttons on the top. 7.2v (6x AA rechargeable cells). 70 mm x 103 mm x 35 mm (2.75" x 4.0" x 1.4"). About 1973. The SE88M does not have enough keys on the front for all the functions, so, unusually, three extra buttons are mounted on the top.
Summit International Corporation. In 1971 Ed Price made a prototype hand-held electronic calculator using a carved wooden case and breadboarded electronics. Click here to read the excellent article "Summit: a Man and the Idea" on the history of Summit calculators by Guy Ball in the Collecting Calculators section of this site. |
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Vintage Calculators |
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© Text & photographs copyright Nigel Tout 2000-2008 except where noted otherwise. |
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