Retro tech from the 70s.
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Texas Instruments TI-2500-II (Datamath II)
I found this at a garage sale in Ohio 2 years ago.
Early Calculator (Electronic Slide Rule)
Date Manufactured: 1974-1975
Price: $50
8 Digit LED Display
Power Supply: 2 AA Batteries (Nickel-Cadmium) 4-6 hours run time
5 Function: Add, Subtract, Multiple, Divide and Percentage
Other keys: Clear and a Clear Entry
Todays Worth: $25
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