DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| This TI-40 was manufactured
in October 1981 by Texas Instruments in Abilene, TX (Date code ATA 4581 » wk 45 yr 1981.  |
| The printed circuit board
(PCB) of this TI-40 manufactured in October 1981 with the CD4557 calculator circuit.  |
| This TI-40
manufactured a few weeks earlier in Italy uses the CD4507 calculator chip.
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If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, October 9, 2002. No reprints without written permission.
