DATAMATH CALCULATOR MUSEUM
|The sales box of a
Western Auto 66-4988-3 "Citation" sold in Summer 1978 in the US.
|This Western Auto 66-4988-3
"Citation" was manufactured
in April 1978 by
Texas Instruments in El Salvador (Date code 1678 » week 16 year 1978).
|The 66-4988-3 "Citation"
manufactured in April 1978 in El Salvador
with the rear part of its housing removed.
|The printed circuit board
(PCB) of the featured 66-4988-3 "Citation" is centered
around a TMC0921 single-chip calculator circuit hidden under the VF-Display.
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© Joerg Woerner, July 6, 2021. No reprints without written permission.