（1）可输入二进制、八进制、十进制、十六进制数； （2）将已输入的数转换成其余进制的数； （3）具有输入输出界面。((1) can be entered into binary, octal, decimal, and sixteen decimal number. (2) convert the number of the input into the rest of the number; (3) there is an input and output interface.)