2.Since it is powered by solar energy, you can use this calculator indoors or outdoors, which is not only completely economical but also very convenient.
3.The native input/output (bits) range is 8 bits:
1. Arithmetic operations are performed by pressing the keys in the exact same order as the equations are calculated. Press the preceding (-) when entering a negative value
Example: -8+5=-3 12+3.5-30=-14.5.
2. When the four arithmetic operations are mixed, they are calculated in the order of input first and then input (the answer obtained in this operation process is wrong, in actual use, multiplication and division should be calculated first, and then addition and subtraction).