DATAMATH PICTURES

This BA-20 Profit Manager Calculator was manufactured in July 1990 by Compal Electronics in Taiwan (Date code C-0790 » mth 07 yr 1990).
The printed circuit board (PCB) of the BA-20 is centered around a n Inventa LI3163 single-chip calculator circuit. Please notice the empty space for the backup battery and the contacts for the omitted switch.
Close-up view of the clock module.
The printed circuit board (PCB) of the clock module.	Close-up view of the single-chip clock circuit.
Close-up view of the Inventa LI3163 single-chip calculator circuit.	Close-up view of the PCB-Mark of a BA-20.