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


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.

Date Made: 1976-1977

Maker: National Semiconductor Corporation

Location: Currently not on view

Place Made: United States

See more items in: Medicine and Science: Computers, Computers & Business Machines, Handheld Electronic Calculators


Exhibition Location:

Credit Line: Gift of John B. Priser

Data Source: National Museum of American History

Id Number: 1986.0988.248Catalog Number: 1986.0988.248Accession Number: 1986.0988

Object Name: electronic calculator

Physical Description: plastic (case; keys; display cover material)metal (circuitry; keyboard material)paper (sticker material)Measurements: overall: 1 in x 2 5/8 in x 5 in; 2.54 cm x 6.6675 cm x 12.7 cm


Record Id: nmah_1305778

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