AKA: 840, AKA (Label): 840-E, Product number (P/N): 840E (840-E),
Keywords/Tags: 840E (840-E) | 840
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: 25, #Key-Blue: 8, #Key-Orange: 6, #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, Memories: 1,
Resemblance with: (Resemblance 008B),
Known Serial-numbers: 145517 | 189086 | 261749 (List of all S/Ns from UNISONIC)
Collector value: 7/10,