DATAMATH PICTURES

The LC 224CKE Check Master in its sleeve with holder for a checkbook and pen.
This Unisonic LC 224CKE Check Master calculator was manufactured in January 1983 in Taiwan.
The Unisonic LC 224CKE calculator is powered by two LR54 (LR1130) batteries.
The printed circuit board (PCB) of the Unisonic LC 224CKE calculator is centered around a NEC uPD1832G single-chip calculator circuit.
Close-up view of the NEC uPD1832G single-chip calculator circuit.	Close-up view of the PCB-Mark and jumper of the LC 224CK.