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Additional Pictures 

 

This TI Business Card calculator was manufactured end of 1979 by
Texas Instruments in El Salvador. 

The LC-Display of the Business Card calculator supports scientific notation. 

The printed circuit board (PCB) of the Business Card calculator is centered
around a TP0325 single-chip calculator circuit.

Close-up view of the TP0325 calculator chip.


horizontal rule

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

Joerg Woerner, December 6, 2019. No reprints without written permission.