Montgomery Ward P50 Handheld Electronic Calculator (Model No. DNS-8660A)

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This handheld electronic calculator has a tan plastic case and seventeen rectangular plastic keys. In addition to ten digit keys and a decimal point key, it has a clear entry/clear key, four arithmetic function keys, and a total key. On the left on the copper-colored keyboard is an on/off switch. Text next to the switch reads: MONTGOMERY (/) WARD. Behind the keyboard is an eight-digit LED display. A compartment for a battery opens on the top of the back.
A jack for a power adapter is on the left side.
A sticker on the back gives instructions. Text at the top reads: WARDS P-50. Text at the bottom reads: Distributed by Montgomery Ward & Co., Inc. (/) Chicago, Illinois 60607 (/) Model No. DNS-8660A (/) Made in U.S.A. Serial No. 57X-152856.
Compare Novus 850 (1986.0988.306). The calculator was made for Montgomery Ward by National Semiconductor Corporation.
Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, CA: Wilson/Barnett, 1997, p. 102.
Online Datamath Calculator Museum, accessed August 29, 2014.
Currently not on view
date made
National Semiconductor Corporation
place made
United States
Physical Description
plastic (case; keys; display cover material)
metal (circuitry; keyboard material)
paper (sticker material)
overall: 1 in x 2 5/8 in x 5 in; 2.54 cm x 6.6675 cm x 12.7 cm
ID Number
catalog number
accession number
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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