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
Texas Instruments TM 990 / U89 Manuals:
Texas Instruments TM 990 / U89 Articles:
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This exhibit has a reference ID of CH50497. Please quote this reference ID in any communication with the Centre for Computing History.
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