Texas Instruments TM 990 / U89

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This may look like a calculator - the keyboard is from a TI-59 calculator - but it's a training system for the TMS 9980A processor. The board has 1K of RAM and 4K of ROM, plus the ability to save and load code from tape.
This board is co-branded Radio Spares.

Manufacturer: Texas Instruments
Date: 1978



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Texas Instruments TM 990 / U89 Manuals:

Item Manufacturer Date
Helios C40 Distributed Software Limited Unknown
TI Programmable 57 Introduction to Programming 1977
TI-5120/TI-5130 Owners Manual T I 1981

Other Systems Related To Texas Instruments TM 990 / U89:

Item Manufacturer Date
Texas Instruments TI-990 Computer System Texas Instruments 1975
Texas Instruments - TI-99/4 Texas Instruments 1979
Texas Instruments - TI-99/4A Texas Instruments 1st June 1981
Texas Instruments TM 990 / 189 Texas Instruments March 1982

This exhibit has a reference ID of CH55659. Please quote this reference ID in any communication with the Centre for Computing History.

 

Texas Instruments TM 990 / U89

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Articles

Memories - Getting Started with the Texas Instruments TI-99/4A by Stephen Shaw

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