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About frist scientific calculator powered by solar cells and button cells
09-01-2017, 11:52 AM
Post: #10
Alevin Offline
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Joined: Apr 2017
RE: About frist scientific calculator powered by solar cells and button cells
There is another candidate for frist scientific calculator with button cells


Sanyo CZ-8102 (year 1975)


Ussing "large button" cells of the era.
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RE: About frist scientific calculator powered by solar cells and button cells - Alevin - 09-01-2017 11:52 AM



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