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Additional Pictures 

 

The sales box of the IS-8400 Digital Planner sold 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.


If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, October 23, 2009. No reprints without written permission.