This document describes the features and characteristics of Casio's FX-50F PLUS calculator.
This manual begins with safety information, including proper battery handling, storage, and disposal, as well as precautions to avoid damage to the calculator. It also explains how to reset the device to its default settings and how to replace the battery, recommending replacement every three years.
The remainder of the guide covers the calculator's six operating modes, contrast adjustment, memory functions, statistical calculations, and program mode. Detailed instructions show how to input expressions, edit calculations, and use built‑in functions such as complex numbers, logarithms, and statistical analysis. This manual is written in Chinese.
Press the designated reset key sequence as described in the manual; this returns all settings and stored data to their factory defaults.
Even if the calculator works normally, replace the battery every three years to prevent leakage and loss of data.
Press the SETUP key, then select the contrast option and use the arrow keys to adjust until the characters are clear.
Press the OFF key; the calculator powers down while preserving all stored information.