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Additional Pictures 

 

This Western Auto M4988 was manufactured in October 1976 by
Texas Instruments in Lubbock, TX (Date code 4376 LTA week 43 year 1976).

The M4988 manufactured in October 1976 in Lubbock, TX
with the front part of its housing removed.

The printed circuit board (PCB) of the featured M4988
is centered around a TMS0974 single-chip calculator circuit.

Close-up view of the TMS0974 packaged in a
28-pin DIP (Dual In-line Package).

Product Label Style 3, Beige, Western Auto of the featured M4988.


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

Joerg Woerner, July 5, 2021. No reprints without written permission.