Single-Board Microcomputer Development Trainer, Texas Instruments TM990/189


According to the user's guide, "The TM 990/189 is a self-contained, single-board microcomputer system. It is intended for use as a learning aid in the instruction of microcomputer fundamentals, machine and assembly language programming, and microcomputer interfacing. It also demonstrates the TMS 9900 family applications and advantages." In addition to a variety of other electronic components, it includes a 45-key alphanumeric keyboard and a ten-digit, seven-segment L.E.D. alphanumeric display.


Texas Instruments, TM 990/189 Microcomputer User's Guide," 1979. Accessed online at on November 1, 2023. The quotation is from p. 1-1.

Date Made: 1979

Maker: Texas Instruments

Location: Currently not on view

See more items in: Medicine and Science: Computers


Exhibition Location:

Credit Line: Jon Titus

Data Source: National Museum of American History

Id Number: 1991.0891.25Catalog Number: 1991.0891.25Accession Number: 1991.0891

Object Name: Microcomputer

Measurements: overall: 1 in x 11 in x 8 in; 2.54 cm x 27.94 cm x 20.32 cm


Record Id: nmah_1105966

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