AKA: YOKOGAWA-HEWLETT-PACKARD 22, Product number (P/N): 22 (YOKOGAWA),
Keywords/Tags: 22 (YOKOGAWA) | YOKOGAWA
Date of intro: 1975, Origin: Singapore (List),
Display: Type = Display (LED) (List),
Number of keys: 30,
Classification: / Pocket / Financial+Business / Module, cartridge, ROM,
Featuring: Procent, Square root,
Related with: HP_docu: (Broch.) *: 21,22,25,25C,27,67,91,97 (JA),
Known Serial-numbers: 1511S63197 (List of all S/Ns from HP_calcs)
Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),