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Additional Pictures 

 

This Bohsei Model 1000 was manufactured in September 1977 in Hong Kong.

The Bohsei Model 1000 calculator is powered by two AA-size batteries.

The Bohsei Model 1000 with its rear cover removed. .

The keyboard and VF-Display of the Bohsei Model 1000.

The printed circuit board (PCB) of the Bohsei Model 1000 calculator is centered
around a TMS1044 single-chip calculator circuit.

The Close-up view of the TMS1044 single-chip calculator circuit.

The Close-up view of the ITRON DP84K Vacuum Fluorescent Display (VFD).


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

Joerg Woerner, February 9, 2023. No reprints without written permission.