APF Mark 1910 Handheld Electronic Calculator

This compact handheld electronic calculator, advertised as a "mini-calculator," has twenty-three square plastic keys and two buttons. These include ten white plastic digit keys; a white decimal point key; keys for the four arithmetic functions, percentage, and square roots; a clear entry/clear key; an equals key; and four memory keys. There are separate on and off buttons. Behind the keyboard is a liquid crystal display, advertised as showing eight digits. A mark below the keyboard reads: aPF MARK 1910.
Space for two small 1.5 volt batteries is at the bottom of the back. A mark printed on the back reads: MARK 1910 (/) LIQUID CRYSTAL CALCULATOR (/) RATING: DC 3V 0.0002W (/) (1.5v BATTERY x 2) (/) APF ELECTRONICS INC> (/) NEW YORK, N. Y. 10022 (/) SERIAL NO: 2038842 (/) TAIWAN. The actual serial number is on a paper sticker on top of the rest of the mark.
The case opens at the bottom to reveal two Union Carbide batteries and a green breadboard. A mark on the chip at the top of the breadboard reads: C3. A mark on the bottom right of the breadboard reads: LC4100.
According to an October 1978 advertisement in the Los Angeles Times, the APF Mark 1910 regularly sold for $15.99 and was on sale for $12.88. A November, 1978, advertisement in the Chicago Tribune gives a regular price of $14.99 and a sale price of $11.88. Both advertisements show the calculator in a "billfold case." This example lacks such a case.
Chicago Tribune, November 12, 1978, p. U12.
Los Angeles Times, October 12, 1978, p. CS7.
Currently not on view
Object Name
electronic calculator
date made
ca 1978
APF Electronics
Physical Description
plastic (display; keys; circuit board material)
metal (case material)
overall: 1/4 in x 2 1/4 in x 3 7/8 in; .635 cm x 5.715 cm x 9.8425 cm
place made
ID Number
catalog number
accession number
Handheld Electronic Calculators
Computers & Business Machines
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of John B. Priser
Additional Media

Visitor Comments

Add a comment about this object

**Please read before submitting the form**

Have a comment or question about this object to share with the community? Please use the form below. Selected comments will appear on this page and may receive a museum response (but we can't promise). Please note that we generally cannot answer questions about the history, rarity, or value of your personal artifacts.

Have a question about anything else, or would you prefer a personal response? Please visit our FAQ or contact page.

Personal information will not be shared or result in unsolicited e-mail. See our privacy policy.

Enter the characters shown in the image.