简单计算器包括双目运算和单目运算功能。双目运算符包含基本的四则运算及乘幂功能，单目运算符包含正余弦，阶乘，对数，开方，倒数等运算。可对输入任意操作数，包括小数和整数及正数和负数进行以上的所有运算并能连续运算。出现错误会给出相应提示，同时包含清除，退格，退出功能以及有与所有按钮相对应的菜单项-Simple calculator includes a binary operator and a unary function. Binocular operator contains four basic arithmetic and exponentiation, unary operator contains the sine and cosine, factorial, number, square root, reciprocal and other operations. Can input any operands, including decimals and integers, and positive and negative all the operators above and continuous operation. Error will give prompt, and contains both clear, backspace, the exit function, and with all the buttons corresponding to menu items