APF Mark 65R Handheld Electronic Calculator

Object Details

APF Electronics

Description

This handheld electronic calculator has twenty-four indented square plastic keys. These include ten white digit keys and an eleventh white decimal point key; and keys for the four arithmetic functions as well as percentage, square root, clear entry/clear, and equals keys. Five orange memory keys are in the rightmost column. The on/off switch is above these keys on the left, and the nine-digit fluorescent display is behind this. A mark below the display reads: aPF rechargeable MARK 65r. The hole for the recharger/adapter is on the top edge.

The black plastic case has two rubber feet at the top. A silver-colored paper sticker below this reads: aPF ELECTRONICS, INC. (/) MODEL NO. MARK 65r (/) D.C. 4.5 VOLTS (/) CAUTION. Use only A.C. adaptor/recharger (/) model 751S to operate on A.C. (/) SERIAL NO. H65r-024822 (/) 7545.005 HONG KONG. Below this is the cover for the sealed battery case. A black paper sticker on this reads: THIS UNIT IS EQUIPPED WITH (/) RECHARGEABLE NICAD BATTERIES. (/) BATTERY COVER IS SEALED. (/) DO NOT ATTEMPT TO OPEN.

Ball and Flamm mention a 1977 advertisement for this calculator which gave a price of $18.95.

Compare the Sears F85 (1986.0988.182).

Reference:

Guy Ball and Bruce Flamm, The Complete Collector's Guide to Pocket Calculators, Tustin CA: Wilson/Barnett, 1997, p. 30.

Location

Currently not on view

Credit Line

Gift of John B. Priser

ca 1977

ID Number

1986.0988.174

accession number

1986.0988

catalog number

1986.0988.174

Object Name

electronic calculator

Other Terms

electronic calculator; Handheld

Physical Description

plastic (case; keys; screen material)

metal (keyboard; connection material)

rubber (feet material)

paper (stickers material)

Measurements

overall: 1 in x 2 7/8 in x 4 7/8 in; 2.54 cm x 7.3025 cm x 12.3825 cm

place made

China: Hong Kong

See more items in

Medicine and Science: Computers

Computers & Business Machines

Handheld Electronic Calculators

National Museum of American History

Record ID

nmah_334588

Metadata Usage (text)

CC0

GUID (Link to Original Record)

https://n2t.net/ark:/65665/ng49ca746ae-151e-704b-e053-15f76fa0b4fa