AKA: Scientist PR, AKA (Label): NOVUS 4525, Product number (P/N): 4525,
Keywords/Tags: 4525 | U631
Date of intro: ~1976, Origin: USA (List), Dimensions: 155x75x26mm, Weight: 195g,
Power: Rechargeable,
Display: Type = Display (LED) (List), Digits = 14,
Number of keys: 39, #Key-Black: 4, #Key-Blue: 4, #Key-Grey: 18, #Key-Red: 1, #Key-White: 12,
Miscellaneous switch: [Load-Step-Run],
Classification: / Pocket,
Featuring: Scientific functions, Square root, Programmable, Programmable Steps: 100,
Original Equipment Manufacturer : NATIONAL SEMICONDUCTOR: 4525 (List of all Export-OEM-models from NATIONAL SEMICONDUCTOR), Resemblance with: HIRADASTECHNIKA SZOVETKEZET: PTK1518,
Known Serial-numbers: 116735 (List of all S/Ns from NATIONAL SEMICONDUCTOR)
Collector value: 8/10,