DATAMATH PICTURES

This TI-1798 Desktop Calculator was manufactured in January 1985 by Compal Electronics in Taiwan (Date code C-0185 » mth 01 yr 1985).
The TI-1798 is powered by 4 solar cells with a LR54 (LR1130) backup battery and the clock module by a small LR41 battery.
The printed circuit board (PCB) of the TI-1798 is centered around a Sharp LI3163 single-chip calculator circuit.
Close-up view of the clock module.
Close-up view of the Sharp LI3163 single-chip calculator circuit.	Close-up view of the PCB-Mark of a TI-1798.