AKA: MODEL 121-U, AKA (Label): 121-U, Product number (P/N): 121U (121-U),
Keywords/Tags: 121U (121-U)
Date of intro: 1973, Origin: Japan (List), Korea (List), Dimensions: 215x175x55mm, Weight: 1030g,
Power: 6V: (C x4) + Adaptor, Adaptor: CASIO_adaptors: AD4160,
Display: Type = Display (VFD tube) (List), Digits = 12+1,
Number of keys: 23, #Key-Black: 17, #Key-Blue: 4, #Key-Red: 2,
Keyboard Array (Rows x Columns): 04x07,
Decimal switch: [6-4-3-2-1-0], Round switch: [(Blank)-5/4], Miscellaneous switch: [(Blank)-(Sigma) (Blank)-K],
Classification: / Desktop with Display,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with: CASIO_docu: M100747C (Broch.) 121U; CASIO_docu: (Broch.) 121U: Wenn Entscheidungen vom...; CASIO_docu: M2000257D (Broch.) 121U; CASIO_docu: (Broch.) *: Quality Product Line from CASIO; CASIO_docu: (Broch.) 121U: When decisions Depend on Fast Figurework; CASIO_docu: (Calculation) 121U; CASIO_parts: (Box) 121U,
Main Components: CASIO: B12D1A,
Resemblance with: (Resemblance 521B),
Known Serial-numbers: 0040513 | 100923 (List of all S/Ns from CASIO)
Initial Cost Price: 39500 JPY (€ 319,95), Collector value: 8/10,
Internet: Link-1: CENTRE FOR COMPUTING HISTORY