AKA (Label): ELECTRONIC CALCULATOR, Product number (P/N): 813T,
Keywords/Tags: 813T
Date of intro: ~1975, Origin: Japan (List), Dimensions: 140x90x26mm, Weight: 150g,
Power: 6V: (AA x4) + Adaptor,
Display: Type = Display (VFD) (List), Digits = 8+1,
Number of keys: 22, #Key-Beige: 10, #Key-Red: 1, #Key-White: 11,
Miscellaneous switch: [OFF-ON],
Classification: / Pocket,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip, Memories: 1,
Main Components: NEC: µPD278C,
Resemblance with: (Resemblance 009),
Known Serial-numbers: 128282 | 137277 | 141278 (List of all S/Ns from UNIMARK)
Collector value: 7/10,