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Texas Instruments SR-10 Handheld Electronic Calculator

Catalog Data:

Texas Instruments
Physical Description:
plastic (overall material)
metal (overall material)
overall: 1 1/2 in x 3 in x 6 1/4 in; 3.81 cm x 7.62 cm x 15.875 cm
Object Name:
electronic calculator
Date made:
Family & Social Life
Computers & Business Machines
Credit Line:
Gift of John B. Priser
ID Number:
Catalog number:
Accession number:
The Texas Instrument Slide Rule-10, more commonly known as the TI SR-10, was a handheld calculator introduced in November 1972, just a few months after TI's first calculator, the Datamath. The SR-10 initially retailed at $149, but was produced in large numbers and soon sold at significant discount. The calculator made use of the TMS0120 single-chip calculator circuit derived from the TMS1802, better known as the first "calculator-on-a-chip."
The calculator had a LED (Light Emitting Diode) display capable of showing 10 decimal digits, and used a NICAD battery pack to power the red numeric display. The user had to constantly charge and recharge the battery after a few hours of use. The NICAD batteries would usually go bad after a few hundred charges. This was a major drawback for early electronic calculators. Later LCD (liquid Crystal Display) devices used so little power that they could run on tiny solar cells.
Currently not on view
See more items in:
Medicine and Science: Computers
Data Source:
National Museum of American History, Kenneth E. Behring Center

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