AKA (Label): ELECTRONIC CALCULATOR, MODEL 310, RYUJIN CO., LTD., Product number (P/N): 310,
Keywords/Tags: 310
Date of intro: ~1975, Origin: Japan (List), Weight: 1290g,
Power: AC,
Display: Type = Display (VFD) (List), Digits = 12,
Number of keys: 28, #Key-Black: 14, #Key-Blue: 12, #Key-Orange: 2,
Decimal switch: [0-2-4-6-F], Round switch: [(Blank)-5/4], Miscellaneous switch: [(Blank)-(Sigma) (Blank)-K CAL-TIME],
Classification: / Desktop with Display / Time,
Featuring: Procent, Square root,
Resemblance with: DECIMO: Timemachine,
Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: WIKIPEDIA