AKA (Label): MODEL 800D, ELECTRONIC CALCULATOR, Product number (P/N): 800D,
Keywords/Tags: 800D
Date of intro: ~sep-1975, Origin: Japan (List), Dimensions: 130x80x25mm, Weight: 134g,
Power: 6V: (AA x4) + Adaptor, Adaptor: CITIZEN_adaptors: CTZ800R,
Display: Type = Display (VFD) (List), Digits = 8+1,
Number of keys: 22, #Key-Blue: 10, #Key-Grey: 11, #Key-Orange: 1,
Keyboard Array (Rows x Columns): 05x05,
Classification: / Pocket,
Featuring: Procent, Square root, PI, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with: CITIZEN_docu: (Ad.) 800D,
Main Components: NEC: µPD940C,
Resemblance with: (Resemblance 007_05_05_22D),
Serie-members: CITIZEN: 800D (version-1) (Without PI); CITIZEN: 800D (version-2) (With PI),
Known Serial-numbers: 121692 | 126645 | 144328 | 148298 | 177943 (List of all S/Ns from CITIZEN)
Collector value: 7/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: VINTAGE TECHNOLOGY