在arm嵌入式环境下设计的触摸屏的计算器，设计了触屏界面，实现基本运算，包括小数运算和平方根运算-Arm embedded in the environment designed touch screen calculator, designed touch screen interface to achieve the basic operations, including the small number of operations and square root operations

基于ARM9 fl2440 ，实现了对arm的触摸屏接口控制，可实现LCD触摸屏-Based on ARM9 fl2440, the realization of the control arm of the touch-screen interface, enabling LCD touch screen