DATAMATH PICTURES

This Radio Shack EC-423 was manufactured in June 1988 by Inventa Electronics Corporation in Taiwan (Date code 06A8 » mth 06 yr 1988).
The printed circuit board (PCB) of the EC-423 is centered around an unknown single-chip calculator circuit.
Close-up view of the unknown single-chip calculator circuit.	Close-up view of the PCB-Mark of a EC-423.