AKA (Label): ELECTRONIC CALCULATOR, Product number (P/N): 91PM,
Keywords/Tags: 91PM
Date of intro: 1977, Origin: Hong Kong (List), Dimensions: 140x70x20mm, Weight: 80g,
Power: 9V + Adaptor,
Display: Type = Display (LED) (List), Digits = 8+1,
Number of keys: 23, #Key-Blue: 6, #Key-Orange: 4, #Key-Red: 2, #Key-White: 11,
Keyboard Array (Rows x Columns): 06x04,
Classification: / Pocket,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip, Memories: 1,
Related with: UNITREX_parts: (Box) 91PM,
Main Components: TEXAS INSTRUMENTS: TMS0972NL,
Known Serial-numbers: 91511 (List of all S/Ns from UNITREX)
Collector value: 7.5/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: Robert LACOSTE, Link-2: SMITHSONIAN MUSIC