TI-5050M Desktop Electronic Calculator


This compact, light desktop printing electronic calculator has an array of nine light gray digit keys at the center, with a zero bar and decimal point key below this. On the left are clear, percentage, division, multiplication, and equals keys. On the right are total, #/S, subtraction, and addition keys. Above the digit keys are memory, F/A, and arrow keys. Behind the keys is a paper tape to print entries and results on special thermosensitive paper. This is the only display of entries and results.

A mark behind the printer reads: TI-5050M. A mark at the front reads: TEXAS INSTRUMENTS. A mark on the bottom reads: TEXAS INSTRUMENTS (/) electronic calculator (/) MODEL TI-5050M (/) SERIAL NO. (/) 9418428 MTA5078 (/) ASSEMBLED IN USA. Below this is a list of patent numbers that range from 3,819,921 to 4,014,013. The dates of these patents range from 1974 to 1977.

Ball and Flamm indicate that the TI-5050M was available in 1976. In 1977 the calculator reportedly sold for $149.95. In 1980, it was advertised as costing $79.95. The second part of the serial number suggests a 1978 date.

Compare 1987.0487.026.


Guy Ball and Bruce Flamm, The Complete Collector’s Guide to Pocket Calculators, Tustin, Calif.: Wilson/Barnett Publishing, 1997, p. 158.

Hyla Clark and Larry Barandes, “Desktop Calculators That Print Their Results,” Popular Mechanics, vol. 147 #4, April, 1977, pp. 187–189.

[Advertisement], Los Angeles Times, January 12, 1980, p. D4.

Date Made: 1978

Maker: Texas Instruments

Location: Currently not on view

Place Made: United States

Subject: Business


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


Exhibition Location:

Credit Line: Gift of John B. Priser

Data Source: National Museum of American History

Id Number: 1986.0988.075Catalog Number: 1986.0988.075Accession Number: 1986.0988

Object Name: electronic calculatorOther Terms: electronic calculator; Desktop

Physical Description: plastic (case; keys material)metal (screws material)paper (tape material)Measurements: overall: 2 13/16 in x 3 1/2 in x 8 1/2 in; 7.112 cm x 8.89 cm x 21.59 cm

Guid: http://n2t.net/ark:/65665/ng49ca746a1-3589-704b-e053-15f76fa0b4fa

Record Id: nmah_334489

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.