Product number (P/N): OSR1501,
Keywords/Tags: OSR1501
Date of intro: ~1975, Origin: Japan (List),
Display: Type = Display (VFD) (List), Digits = 5+1+(2+1),
Number of keys: 35, #Key-Grey: 22, #Key-Red: 2, #Key-White: 11,
Keyboard Array (Rows x Columns): 07x05, Keyboard Layout: [x<>M] [M-] [M+] [RM] [CM] - [sin] [cos] [tan] [e(Power-x)] [ln] - [sin(Minus)1] [cos(Minus)1] [tan(Minus)1] [EXP] [N(ArrowLeft)(ArrowRight)S] - [7] [8] [9] [(Pi)] [C] - [4] [5] [6] [(SquareRoot)x] [1/x] - [1] [2] [3] [x] [(Division)] - [0] [.] [=] [+] [-],
Miscellaneous switch: [(ArrowRight)-ON RD-DG],
Classification: / Pocket,
Featuring: Scientific functions, Square root, PI, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Original Equipment Manufacturer : QUALITRON: 1448, Resemblance with: PRINZTRONIC: SC4001M, (Resemblance 014), Made by: QUALITRON (List of all Import-OEM-models for ORBIT),
Collector value: 7.5/10,