This file is the CASIO fx-3650P fx-3950P user manual, which introduces the safety precautions, operation instructions and operating methods of this product
The manual begins with safety and handling precautions, covering battery safety, disposal, and proper cleaning of the calculators. It also explains how to avoid damage from impacts, moisture, and extreme temperatures.
Subsequent sections describe the calculator’s functions, including basic arithmetic, fractions, percentages, complex numbers, statistical calculations, and programming features. Technical specifications such as power supply, dimensions, and operating temperature are listed, and troubleshooting tips are provided for common error messages.
| Power Supply | fx-3950P: Single G13 button battery (LR44); fx-3650P: Solar cell + single G13 button battery (LR44) |
|---|---|
| Battery Life | fx-3950P: ~9,000 hours continuous display; both models: ~3 years typical use |
| Dimensions (H × W × D) | 11.8 mm × 115.4 mm × 15.9 mm |
| Weight | 100 g (3.5 oz) including battery |
| Power Consumption | 0.0002 W |
| Operating Temperature | 0 °C to 40 °C (32 °F to 104 °F) |
The calculator automatically powers off after about six minutes of inactivity; press the 5 key to turn it back on.
It is rated for operation between 0 °C and 40 °C; low temperatures may slow the display, while high temperatures can cause discoloration or damage.