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Additional Pictures 

 

This TI-1250 Version 4 was manufactured in June 1977 by
Texas Instruments in Hong Kong (Date code 2577 HK week 25 year 1977).

The TI-1250 Version 4 manufactured in June 1977 in Hong Kong
with the front part of its housing removed.

The printed circuit board (PCB) Type 4 of the featured TI-1250
is centered around a TMS0972 single-chip calculator circuit.

Close-up view of the TMS0972 packaged in a
28-pin SPDIP (Shrink Plastic Dual In-line Package).


If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, November 26, 2008. No reprints without written permission.