National Semiconductor 103A Handheld Electronic Calculator

National Semiconductor 103A Handheld Electronic Calculator

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This handheld electronic calculator comes in a checkbook and is designed to assist in balancing checking accounts. It has a total of thirty-one plastic keys. On the left side are ten digit keys, a clear entry/clear key, a decimal point key, and four arithmetic function keys. At the center are a % key, a total key, an off key, an on key, and a DB key. On the right is a row of keys for a checking account for entering checks and deposits, and finding balances. A second row of three keys is for indicating charges, payments, and balances in a charge account. A third row of keys for a second charge account. At the bottom right corner is a grand total key.
Behind the keyboard is an eight-digit LCD display. To the right of it are three brightly colored dots. Text to the left reads: NSC National Semiconductor 103A.
The back of the calculator is riveted to the calculator, so marks there were not recorded. A mark on the circuit board reads: NS-103B-1 (/) A=5 (/) B=10.
Text on the inside of the checkbook reads: MADE IN TAIWAN. The checkbook also includes space for a pen.
Compare 1986.0988.227 and 1986.0988.336.
Frank Macias, “Calculating Friends: Delegate That Everyday Balancing Act to These Little Guys with Big Brains,” Los Angeles Times, November 19, 1978, p. O64.
[Advertisement], Washington Post, February 13, 1981, p. A41. On sale for $29.95, regularly $34.95.
Object Name
electronic calculator
Other Terms
electronic calculator; Handheld
date made
National Semiconductor Corporation
place made
Physical Description
aluminum (case material)
plastic (keys; pouch material)
overall: 3/8 in x 6 in x 2 3/4 in;.9525 cm x 15.24 cm x 6.985 cm
ID Number
catalog number
accession number
Credit Line
Gift of John B. Priser
See more items in
Medicine and Science: Computers
Computers & Business Machines
Handheld Electronic Calculators
My Computing Device
Exhibition Location
National Museum of American History
Data Source
National Museum of American History
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I bought this calculator at J.C.Penny in 1978. I have always loved it and I am still using it to this day. I know you probably won’t believe me but I have only replaced the battery twice in all that time. I don’t have the original case, it wore out several years ago. It still works great. I have been looking to replace it but of course they don’t make it anymore. I will continue to use it until the day it no longer works. I would love to find one that is a lot like it but have not been able to do so. So happy to read the history of this calculator.

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