AKA: MARK 20, SCIENTIFIC CALCULATOR, Product number (P/N): 20,
Keywords/Tags: 20 | MARK 20 | SCIENTIFIC CALCULATOR
Date of intro: ~1974, Dimensions: 160x75x30mm, Weight: 215g,
Power: Rechargeable,
Display: Type = Display (LED) (List), Digits = 8+1,
Number of keys: 26,
Classification: / Pocket,
Featuring: Scientific functions, Square root, PI, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Original Equipment Manufacturer : APF: 20 (version-1) (List of all Export-OEM-models from APF), Resemblance with: SEARS: 41024 (version-2),
Serie-members: APF: 20 (version-1) (LED-display); APF: 20 (version-2) (VFD-display),
Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),