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Additional Pictures 

 

This EDF Energy Calculator was manufactured in April 1980 by
Texas Instruments in the Netherlands (Date code ACH 1480 wk 14 yr 1980).

The EDF EEC-5- module.

Inside the module we located
a standard TMC0540 with a 
ZA5528 ROM-Code.

The customized keyboard of the TI-58 based EDF Energy Calculator.

The base calculator of this EDF Energy Calculator is a
standard TI-58 manufactured in 1980.


horizontal rule

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

Joerg Woerner, August 8, 2009. No reprints without written permission.