Montgomery Ward P8F Handheld Electronic Calculator

This handheld electronic calculator has a tan, black, and gray plastic case with seventeen plastic keys, fifteen of them square and two rectangular. In addition to ten digit keys and a decimal point key it has four arithmetic function keys, a clear key, and a clear entry key. A mark behind the keyboard reads: MONTGOMERY (/) WARD electronic P8F. Behind this is an eight-digit LED display. A jack for a power adapter is on the back edge and a switch is on the left side.
The back of the calculator has a compartment for four AA penlight batteries. A sticker on the compartment cover gives operating instructions. It is marked in part: Model No. TXI-8644A (/) Serial No. 37X-0007883 (/) DISTRIBUTED BY MONTGOMERY WARD & CO., INC. (/) CHICAGO, ILLINOIS 60607. The back has four rubber feet.
The "TXI" in the model number indicates that the calculator was made for Montgomery Ward by Texas Instruments.
Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett, 1997, p. 101.
Online Datamath Calculator Museum, accessed August 29, 2014.
Currently not on view
Object Name
electronic calculator
date made
ca 1974
Montgomery Ward and Company
Physical Description
plastic (case; keys; display cover material)
metal (circuitry material)
paper (sticker material)
overall: 1 1/2 in x 3 in x 5 3/4 in; 3.81 cm x 7.62 cm x 14.605 cm
ID Number
catalog number
accession number
Computers & Business Machines
Handheld Electronic Calculators
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

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