Vintage Casio VX-4 Pocket Computer 64KB Expand BASIC CASL C Language Japan Rare
It supports BASIC, CASL, and C Language programming. The original RAM (8KB) has been expanded to 64KB (32KB + 32KB), which exceeds the Casio FX-870P specification. RAM has been upgraded to 64KB. Casio VX-4 Pocket Computer (64KB expanded).