DATAMATH CALCULATOR MUSEUM
|This Western Auto M4987 was manufactured
in April 1977 by
Texas Instruments in Lubbock, TX (Date code 1577 LTA » week 15 year 1977).
manufactured in April 1977 in Lubbock, TX
with the front part of its housing removed.
|The printed circuit board
(PCB) of the featured M4987
is centered around a TMS0972 single-chip calculator circuit.
of the TMS0972 packaged in a
28-pin SPDIP (Shrink Plastic Dual In-line Package).
|Product Label Style
3, Western Auto
of the featured M4986.
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© Joerg Woerner, June 14, 2003. No reprints without written permission.