AKA (Label): ELECTRONIC CALCULATOR, Product number (P/N): 1540L,
Keywords/Tags: 1540L
Date of intro: 1976, Origin: Hong Kong (List), Dimensions: 152x76x23mm, Weight: 100g,
Power: 3V: (AA x2) + Adaptor,
Display: Type = Display (LED) (List), Digits = 8+1,
Number of keys: 25, #Key-Blue: 13, #Key-Red: 1, #Key-White: 11,
Miscellaneous switch: [(Blank)-ON],
Classification: / Pocket,
Featuring: Procent, Square root, Memories: 1,
Known Serial-numbers: 49695 (List of all S/Ns from UNISONIC)
Collector value: 7/10,