DATAMATH CALCULATOR MUSEUM
sales box of the IS-8400 Digital
around 1993 in the Europe.
|This IS-8400 Digital
Planner was manufactured in February 1994 by
Texas Instruments in Italy (Date code RCI 0594 » wk 05 yr 1994).
|This PS-9000 Back-Up Memory
Module connected to a IS-8400 Digital Planner.
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© Joerg Woerner, October 23, 2009. No reprints without written permission.