本计算器共分为以下三个界面：



（1）通用计算：能够进行按钮上支持的各种运算，并支持运算符的优先级，



但计算的数据和精度均有一定的限制，仅能计算10的100次方以内的数据，最



多保留17位有效数据。



（2） 高精度计算：能够进行按钮上的各种运算，但不支持运算符的优先级，



每一次都只能进行一种运算，计算的数据精度非常高，除阶乘外，其余运算均



能够计算30000个有效数据以内的数据，阶乘可以计算50000以内的数据。



（3）智能计算：能够进行按钮上的各种运算，且支持运算符的优先级，但数



据的精度不如（2）的高，所有的数据（包括结果），最多只能有30000位有效



数据。-The calculator is divided into the following three interfaces:



(1) general-purpose computing: the ability to carry out the button to support a variety of operations, and to support the operator precedence,



But the calculation accuracy of the data and have certain restrictions, only 10 of the 100 th power computing within the data, the most



17 to retain valid data.



(2) high-precision computing: the ability to carry out various operations on the button, but do not support operator precedence,



Each time a kind of operation can only be carried out to calculate the data accuracy is very high, in addition to factorial, the remaining operations are



Able to calculate the 30000 valid data within the data, can calculate the factorial of 50,000 within the data.



(3) Intelligent computing: the ability to carry out various operations on the button, and support operator precedence, but the number of



According to the precision of better than (2) high, all of the data (i