DATAMATH CALCULATOR MUSEUM |
Additional Pictures
This Western Auto M4987 was manufactured
in April 1977 by Texas Instruments in Lubbock, TX (Date code 1577 LTA » week 15 year 1977). |
The M4987
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. |
Close-up view
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. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, June 14, 2003. No reprints without written permission.