AKA: Scientist, Product number (P/N): 4520,
Keywords/Tags: 4520 | Scientist
Date of intro: ~1976, Origin: Malaysia (List), USA (List), Dimensions: 152x76x30mm, Weight: 130g,
Power: Rechargeable,
Display: Type = Display (LED) (List), Digits = 10+1+(2+1),
Number of keys: 35, #Key-Black: 4, #Key-Grey: 18, #Key-Red: 1, #Key-White: 12,
Classification: / Pocket / RPN (Reverse Polish Notation),
Featuring: Scientific functions, Square root, PI, Memories: 1,
Related with: (Docu_Mags): 197601: ELECTRONICS TODAY INTERNATIONAL,
Original Equipment Manufacturer : NATIONAL SEMICONDUCTOR: 4520 (List of all Export-OEM-models from NOVUS), Resemblance with: HIRADASTECHNIKA SZOVETKEZET: TK1518; NATIONAL SEMICONDUCTOR: 4520,
Known Serial-numbers: 105593 | 120030 | 128495 | 129088 | 135666 | 137009 (List of all S/Ns from NOVUS)
Initial Cost Price: USD60.00, Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: Robert LACOSTE