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Texas Instruments 1750 Handheld Electronic Calculator

Texas Instruments 1750 Handheld Electronic Calculator

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Description
This handheld electronic calculator has a light metal case with an array of twenty-three rectangular plastic keys. It was part of the Texas Instruments Slimline series. The calculator has ten digit keys, a decimal point key, a total key, a change sign key, four arithmetic function keys, a clear entry/clear key, a square root key, a percentage key, and four memory keys. A mark at the top of the keyboard reads: TEXAS INSTRUMENTS. A mark at the base of the keyboard reads: TI-1750. Behind the keyboard an eight-digit LCD display.
A sticker on the back of the calculator reads: TEXAS INSTRUMENTS (/) electronic calculator (/) USE SILVER OXIDE BATTERIES: S-76, G-13 (/) SERIAL NO. (/) 127 819433 (/) MADE IN JAPAN. Unscrewing two screws at the top of the back reveals a circuit board that is marked in part: SANSYU (/) SELECT (/) KB-6511-01. There is no mark on the chip.
The calculator has a dark brown plastic jacket.
References:
[Advertisement], Los Angeles Times, July 9, 1977, p. C2. TI-1750 sells for $19.95.
[Advertisement], Chicago Tribune, November 27, 1977, p. W10. TI-1750 selling for $17.99, regularly $20.99.
[Advertisement], Los Angeles Times, July 27, 1978, p. G16. TI-1750 selling for $19.95.
[Advertisement], Atlanta Constitution, August 31, 1979, p. 15A. TI-1750 on sale for $18, originally $30.
[Advertisement], Atlanta Constitution, August 31, 1980, p. 23A. TI-1750 on sale for $13.99, regularly $19.99.
[Advertisement], Boston Globe, April 26, 1981, p. 23. TI-1750 on sale for $12.88, regularly $20.88.
Location
Currently not on view
Object Name
electronic calculator
date made
1977-1981
maker
Texas Instruments
place made
Japan
Physical Description
plastic (overall material)
metal (case; circuitry material)
paper (tag material)
Measurements
overall: 3/8 in x 2 3/4 in x 4 1/2 in;.9525 cm x 6.985 cm x 11.43 cm
ID Number
1986.0988.327
catalog number
1986.0988.327
accession number
1986.0988
Credit Line
Gift of John B. Priser
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Computers & Business Machines
Data Source
National Museum of American History
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Comments

Datamath.org , the Data math calculator museum, has a specific write up on the TI 1750.
I am still regularly using a TI 1750 calculator bought new in about 1978, and still with the original batteries. Is this common experience?
Mine fell on the floor this morning and now will only show the top half of the numbers. I'm so sad. I've had it about 40 years and changed the batteries once that I remember. I use it constantly at the grocery store and don't know what I can get to replace its compact size and ability to stay on until I turn it off.

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