AKA: 831, AKA (Label): 831-A, Product number (P/N): 831A (831-A),
Keywords/Tags: 831A (831-A) | 831
Date of intro: ~1975, Origin: Japan (List), Dimensions: 134x82x28mm, Weight: 125g,
Power: 6V: (AAA x4) + Adaptor,
Display: Type = Display (VFD) (List), Digits = 8+1,
Number of keys: 22, #Key-Blue: 8, #Key-Orange: 3, #Key-White: 11,
Keyboard Array (Rows x Columns): 05x05,
Miscellaneous switch: [POWER_OFF-ON],
Classification: / Pocket,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with: UNISONIC_parts: (Box) 831A,
Resemblance with: (Resemblance 007_05_05_22A),
Known Serial-numbers: 005094 | 006290 | 018999 | 058085 | 063566 (List of all S/Ns from UNISONIC)
Collector value: 7/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),