DATAMATH PICTURES

The Radio Shack EC-430 Checkbook Calculator in its sleeve with holder for a checkbook and pen.
This Radio Shack EC-430 Checkbook Calculator was manufactured in August 1992 in Thailand (Date code 8A2 » mth 08 yr 1992).
The printed circuit board (PCB) of the EC-430 manufactured in 1992 doesn't reveal type and manufacturer of its single-chip calculator circuit but we are almost positive to spot a Toshiba T7752S.
Close-up view of the Toshiba T7752S single-chip calculator circuit.	Close-up view of the PCB-Mark of a EC-430.