AKA: Z-51, AKA (Label): ELECTRONIC CALCULATOR, MODEL: Z-51, 7J-263,
Date of intro: ~1975, Origin: Hong Kong (List), Dimensions: 145x75x30mm, Weight: 80g,
Power: 9V + Adaptor,
Display: Type = Display (LED) (List), Digits = 8+1,
Number of keys: 24, #Key-Brown: 24,
Classification: / Pocket,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Known Serial-numbers: 06777 (List of all S/Ns from ENTERPREX)
Collector value: 7.5/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),