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Additional Pictures 

 

The sales box of the Business Edge calculator sold in 1988 in Germany.



This Business Edge was manufactured in January 1988 by 
Inventec Corporation in Taiwan (Date code I-0188 mth 01 yr 1988).

The display of the Business Edge in the self-test
mode with all segments activated.

The huge LC-display of the Business Edge 
covers the calculator brain easily.

Removing the LC-display reveals the Toshiba T9728
single-chip calculator circuit. 

Close-up view of the Toshiba T9728 single-chip calculator circuit.

 
Close-up view of the PCB-Mark of the Business Edge.

 


horizontal rule

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

Joerg Woerner, May 4, 2003. No reprints without written permission.