AKA (Label): ELECTRONIC CALCULATOR, Product number (P/N): 400,
Keywords/Tags: 400
Date of intro: 1974, Origin: USA (List), Dimensions: 127x76x23mm, Weight: 100g,
Power: 9V + Adaptor,
Display: Type = Display (LED) (List), Digits = 8+1,
Number of keys: 19, #Key-Red: 9, #Key-White: 10,
Miscellaneous switch: [(Blank)-ON],
Classification: / Pocket,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Main Components: MOSTEK: MK50282A,
Resemblance with: (Resemblance 086),
Serie-members: CORVUS: 400 (version-2) (9 dark keys); CORVUS: 400 (version-1) (No dark keys),
Known Serial-numbers: 4000154716 (400-0154716) | 4000160251 (400-0160251) | 4000293094 (400-0293094) | 4000459908 (400-0459908) | 4000467694 (400-0467694) | 4000481559 (400-0481559) | 4000494124 (400-0494124) | 4000496127 (400-0496127) (List of all S/Ns from CORVUS)
Collector value: 7.5/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),