Victor 85 "Tallymate"
Distinctive features: Japanese hand-held electronic calculator sold by the famous U.S. mechanical calculator manufacturer.
Technical details:
Display is 8 digits, green fluorescent.
4-functions, constant.
Main integrated circuit - Texas Instruments TMS0105NC, in this example it is date coded week 28 1973.
9v (6x AA).
95 mm x 225 mm x 46 mm (3.75" x 8.9" x 1.8").
1973.
Has battery-level meter, on the right above the display.
On the left above the display are red LEDs to indicate "Overflow" and "Negative number".
The switch on the right has settings at "F-2-3", to set decimal point mode to Floating point, 2, or 3 places of decimals.
Made in Japan, for Victor Comptometer Corporation Business Machines Division, Chicago, Illinois.
This calculator is a bit of a handful for its year of manufacture.
Text & photographs copyright, except where stated otherwise, © Nigel Tout 2000-2025.
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