AKA: M 400, AKA (Label): M400 (M 400), Product number (P/N): M400 (M 400),
Keywords/Tags: M400 (M 400)
Date of intro: 1977, Origin: Japan (List), Dimensions: 115x70x9mm,
Power: Button: (x4),
Display: Type = Display (LCD yellow) (List), Digits = 8+1,
Number of keys: 24, #Key-Orange: 11, #Key-Red: 2, #Key-White: 11,
Miscellaneous switch: [0-1],
Classification: / Pocket,
Featuring: Procent, Square root, Memories: 1,
Known Serial-numbers: 0100655 (List of all S/Ns from ARISTO)
Collector value: 7.5/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Info: http://www.hh.schule.de/metalltechnik-didaktik/museum/taschenrechner/m400.htm