DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The sales box of a
True Value T-1220 calculator sold around Summer 1976 in the US.  |
Side-view of the
sales box. |
| This True Value T-1220 was manufactured
in June 1976 by Texas Instruments in Lubbock, TX (Date code 2376 LTA » week 23 year 1976).
|
| The T-1220 manufactured
in June 1976 in Lubbock, TX with the front part of its housing removed.
|
| The printed circuit board
(PCB) of the featured T-1220 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
4, A-Series 6-Digit of the featured T-1220. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, July 7, 2021. No reprints without written permission.
