在顶端2个操作数框输入原始值，将自动显示其四则运算值，以及运算结果的平方、开根、倒数、立方、自然对数、常用对数值，还可进行角度弧度换算，阶乘和三角函数计算，以及长度、面积、质量、体积的单位换算。-In the top two operands box to enter the original value, will automatically display its four operational values, and computing the results of the square roots, reciprocal, cubic, the natural logarithm, common logarithm, but also to the angle in radians conversion, factorial and triangular function calculation, as well as length, area, mass, volume of unit conversion.