AKA: MARK 1920, AUTO SHUT OFF, AKA (Label): MARK 120, LIQUID CRYSTAL CALCULATOR, Product number (P/N): 1920,
Keywords/Tags: 1920 | MARK 1920
Date of intro: ~1979, Origin: Hong Kong (List),
Power: 3V: (G13 x2),
Display: Type = Display (LCD) (List),
Number of keys: 25, #Key-Brown: 8, #Key-Orange: 5, #Key-White: 12,
Classification: / Pocket,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with:
APF_docu: (Broch.) *: BRINLOCK
APF_docu: (Instr.) 1920
APF_parts: (Box) 1920,
Serie-members:
APF: 1920
APF: 2201
APF: 3550,
Known Serial-numbers: 340240 | 378583 (List of all S/Ns from APF)
Collector value: 7/10,
Internet: Link-1: SMITHSONIAN MUSIC