AKA: MODEL fx-1,
Date of intro: feb-1972, Origin: Japan (List), Dimensions: 317x241x76mm, Weight: 2300g,
Power: AC,
Display: Type = Display (Nixie) (List), Brand = HITACHI: CD90P, Digits = 12,
Number of keys: 40, #Key-Black: 6, #Key-Blue: 4, #Key-Red: 2, #Key-SilverColor: 17, #Key-White: 11,
Decimal switch: [8-6-4-3-2-0], Round switch: [F-5/4-CUT],
Classification: / Desktop with Display,
Featuring: Scientific functions, Square root, Logic-technology: LSI (Large Scale Integration), calculator-chipset, Memories: 2,
Related with: CASIO_docu: (Instr.) FX1: Bedienungsanleitung,
Main Components: CASIO: A12E1C; NEC: µPD173D; NEC: D174B; NEC: D502 {3x}; NEC: D502D; NEC: D503 {3x}; NEC: D503D,
Original Equipment Manufacturer : CASIO: FX1, Resemblance with: DIETZGEN: ESR1; REMINGTON: EDC1259S,
Known Serial-numbers: 105251 | 205256 | 205911,
Initial Cost Price: 325 000 JPY (2 632,50 €), Collector value: 9.5/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Info: First scientific calc. from CASIO
Internet: Link-1: THE OLD CALCULATOR MUSEUM, Link-2