基于博创ARM2410-SforUCOS平台的计算器，利用逆波兰式算法，可以实现键盘和触摸屏操作，可以实现加减乘除、括号、删除和清屏功能-Borch ARM2410-SforUCOS based platform calculator, use Reverse Polish Notation algorithm can achieve the keyboard and touch-screen operation, you can achieve arithmetic, parentheses,