Product number (P/N): CB1020,
Keywords/Tags: CB1020
Date of intro: ~1975,
Display: Type = Display (VFD) (List),
Number of keys: 28, #Key-Black: 11, #Key-Blue: 15, #Key-Orange: 2,
Classification: / Pocket,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Serie-members: INTERTON ELECTRONIC: CB1020 (Oval keys); INTERTON ELECTRONIC: PC4020 (version-1) (Rectangular keys, Black); INTERTON ELECTRONIC: PC4020 (version-3) (Rectangular keys, Beige),
Collector value: 7/10,