AKA: PERSONAL M-1, ELECTRONIC CALCUALTOR,
Date of intro: ~1976, Origin: Japan (List), Dimensions: 124x75x22mm, Weight: 95g,
Power: 3V: (AA x2) + Adaptor,
Display: Type = Display (VFD) (List), Digits = 8,
Number of keys: 21, #Key-Black: 4, #Key-Orange: 1, #Key-White: 16,
Classification: / Pocket,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip, Memories: 1,
Related with: CASIO_docu: M04011284A (Instr.) H813B; #401242#,
Main Components: NEC: D1877C,
Known Serial-numbers: 3K101A | 3K105A | 5K109A (List of all S/Ns from CASIO)
Collector value: 7/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: VINTAGE TECHNOLOGY, Link-2: MY CALCULATORS DATABASE