Additional Pictures 


The sales box of a Western Auto M4986 Citation sold around Winter 1976 in the US.

This Western Auto M4986 was manufactured in October 1976 by
Texas Instruments in Lubbock, TX (Date code 4376 LTA week 43 year 1976).

The M4986 manufactured in October 1976 in Lubbock, TX
with the front part of its housing removed.

The printed circuit board (PCB) of the featured M4986
is centered around a TMS0972 single-chip calculator circuit.

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

Product Label Style 3, Western Auto of the featured M4986.

horizontal rule

If you have additions to the above article please email:

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