DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The sales box of a Western Auto M4988
Citation sold around Spring 1977 in the US. |
This Western Auto M4988 was manufactured
in April 1977 by Texas Instruments in Lubbock, TX (Date code 1577 LTA » week 15 year 1977). |
The M4988
manufactured in April 1977 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 SPDIP (Shrink Plastic Dual In-line Package). |
Product Label Style
3, Beige, Western Auto
of the featured M4988. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, July 5, 2021. No reprints without written permission.