AKA: R 4000, AKA (Label): R 4000, 6690, Product number (P/N): R4000,
Keywords/Tags: R4000
Date of intro: ~1978, Origin: Japan (List), Dimensions: 150x147x50mm, Weight: 295g,
Power: 3V: (D x2) + Adaptor,
Display: Type = Display (VFD) (List), Digits = 10+1,
Number of keys: 25, #Key-Orange: 9, #Key-Red: 1, #Key-White: 15,
Decimal switch: [2-F], Miscellaneous switch: [K-N 1-0],
Classification: / Desktop with Display,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip, Memories: 1,
Main Components: TEXAS INSTRUMENTS: TMC1073NL,
Resemblance with: (Resemblance 501),
Known Serial-numbers: 00010466 (List of all S/Ns from ARISTO)
Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: LÜTJENS Jörn