AKA: 840, AKA (Label): 840-D, Product number (P/N): 840D (840-D),
Keywords/Tags: 840D (840-D) | 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: 24, #Key-Blue: 8, #Key-Orange: 5, #Key-White: 11,
Keyboard Array (Rows x Columns): 05x05,
Miscellaneous switch: [POWER_OFF-ON],
Classification: / Pocket,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip, Memories: 1,
Resemblance with: (Resemblance 007_05_05_24A),
Known Serial-numbers: 096842 (List of all S/Ns from UNISONIC)
Collector value: 7/10,