Introduction - If you have any usage issues, please Google them yourself
Accept operands are in the single digits, press the# key to the end of the postfix expression input, and output the results to achieve simple computing functions a) suffix expression evaluation function began after postfix expression key to accept the postfix expression input . b) Basic data arithmetic functions+,-,, /, , 1/X, sqrt c) simple data accumulation function MR, MC, MS, M+