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Additional Pictures 

 

The sales box of the Tandy EC-306 Chequebook Calculator sold around 1986 in the United Kingdom.

The Tandy EC-306 Chequebook Calculator in its sleeve with holder for a checkbook and pen.

This Tandy EC-306 calculator was manufactured in January 1986 in Hong Kong (Date code 1A6 mth 01 yr 1986).

The Tandy EC-306 calculator is powered by two LR44 (G13) batteries.

The printed circuit board (PCB) of the Tandy EC-306 calculator is centered
around a NEC uPD1833G single-chip calculator circuit.

Close-up view of the NEC uPD1833G single-chip calculator circuit.

Close-up view of the PCB-Mark of a Tandy EC-306.


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

Joerg Woerner, February 8, 2020. No reprints without written permission.