AKA: 8 mini, AKA (Label): ELECTRONIC CALCULATOR 831, Product number (P/N): 831,
Keywords/Tags: 831 | 8 | mini
Date of intro: ~1975, Origin: Japan (List),
Power: 3V: (AA x2) + Adaptor,
Display: Type = Display (LCD) (List), Digits = 8+1,
Number of keys: 20, #Key-Grey: 7, #Key-White: 11, #Key-Yellow: 2,
Miscellaneous switch: [OFF-ON],
Classification: / Pocket,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Resemblance with: (Resemblance 033),
Known Serial-numbers: M0137039 (M 0137039) (List of all S/Ns from OMRON)
Collector value: 7/10,