AKA (Label): MODEL DEC-641A4, Product number (P/N): DEC61A4 (DEC-61A4),
Keywords/Tags: DEC61A4 (DEC-61A4)
Date of intro: sep-1968, Origin: Japan (List), Dimensions: 390x298x100mm, Weight: 6500g,
Power: AC,
Display: Type = Display (Nixie) (List), Digits = 14+1,
Number of keys: 25, #Key-Black: 10, #Key-Blue: 2, #Key-Red: 2, #Key-White: 11,
Decimal switch: [0-2-3-6],
Classification: / Desktop with Display,
Featuring: Square root, Logic-technology: JMOS (Japanese MOS), Memories: 1,
Main Components: MITSUBISHI: M53*,
Resemblance with: COLUMBIA: 61A,
Known Serial-numbers: 0110589 | U207219 | U207959 | W203479Y | Z212339Y (List of all S/Ns from DENON)
Collector value: 9/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: THE OLD CALCULATOR MUSEUM, Link-2: KIRCHOF Thomas