DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The sales box of the Business Edge
calculator sold in 1988 in Germany.  |
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This Business Edge
was
manufactured in January 1988 by Inventec Corporation in Taiwan (Date code I-0188 » mth 01 yr 1988).
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The display of the
Business Edge in the self-test mode with all segments activated.
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| The huge LC-display
of the Business Edge covers the calculator brain easily.
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Removing the LC-display
reveals the Toshiba T9728 single-chip calculator circuit.
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Close-up view of the
Toshiba T9728 single-chip calculator circuit. |
Close-up view of the
PCB-Mark of the Business Edge. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, May 4, 2003. No reprints without written permission.
