DATAMATH CALCULATOR MUSEUM
Ward electronic P800 calculator aka TXI-8642A was
in 1973 by Texas Instruments.
construction of the boxy Montgomery Ward TXI-8642A looks very
The Montgomery Ward TXI-8642A relies on
Texas Instruments technology for the keyboard,
display drivers and display.
circuit board (PCB) of the Montgomery
Ward TXI-8642A makes use of a TMS0103 or
TMS0109 single-chip calculator circuit.
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© Joerg Woerner, January 28, 2006. No reprints without written permission.