DATAMATH PICTURES

This Triumph-Adler Model 80C (EC21) was manufactured in November 1974 in Japan.

The Triumph-Adler Model 80C (EC21) is powered by four disposable 1.5 Volt batteries.

The Triumph-Adler Model 80C (EC21) calculator with the sliding metal part of its housing removed.

The printed circuit board (PCB) of the Triumph-Adler Model 80C (EC21) is centered
around a NEC µPD275single-chip calculator circuit.

Close-up view of the NEC µPD275 single-chip calculator circuit.

Close-up view of the FUTABA 9-ST-12 Vacuum Fluorescent Display (VFD).

Front- and backside of the keyboard assembly of the Triumph-Adler Model 80C (EC21) calculator.

Close-up view of the date code located on the GICO keyboard assembly.

Close-up view of the PCB layout for the [=] and [+] keys of the Triumph-Adler Model 80C (EC21) calculator.