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Additional Pictures 

 

This BA-III Prototype was manufactured in May 1983 by 
Inventec Corporation in Taiwan.

The BA-III Prototype uses two LR44 batteries. 

The rigid printed circuit board (PCB) of the BA-III Prototype.

The LC-Display of the BA-III Prototype with a solid metal frame.

The TP0322 single-chip calculator circuit.

Close-up view of the PCB-Mark of a BA-III.


 


horizontal rule

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

© Joerg Woerner, March 24, 2018. No reprints without written permission.