DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The sales box of a
Western Auto 66-4987-5 "Citation" sold in Winter 1977 in the US.  |
| This Western Auto 66-4987-5
"Citation" was manufactured
in October 1977 by Texas Instruments in Midland, TX (Date code 4177 MTA » week 41 year 1977).
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The 66-4987-5 "Citation" is powered
by a 9V alkaline battery. |
| The 66-4987-5 "Citation"
manufactured in October 1977 in Lubbock, TX with the rear part of its housing removed.
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| The printed circuit board
(PCB) of the featured 66-4987-5 "Citation" is centered around a TMC0923 single-chip calculator circuit hidden under the VF-Display.  |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, July 6, 2021. No reprints without written permission.
