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Calcu-pen |
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Display is 8 digits, red LED. 4-function, %. 1.5v (1x N). 160 mm x 15 mm (6.3" x 0.6"). About 1975. Made in Japan. The buttons are 4-way switches. To operate, a finger is placed on a button and moved sideways in the direction of the number or operation required. Click here to see the article "Unusual Calculators The Calcu-pen" by Guy Ball in the "Collecting Calculators" section of this site.
By 1975 the electronics required for a calculator had shrunk so much that it could be fitted into a, slightly bulbous, ball-point pen. |
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Vintage Calculators |
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© Text & photographs copyright Nigel Tout 2000-2008 except where noted otherwise. |
