【摘要】 该文介绍一种适用于电容式触摸屏的控制器电路，该控制器由８７５１单片机系统及相应的触摸感应电路组成，阐明了电容式触摸屏的结构和控制器的硬件电路及各部分的功能，以及确定触摸位置坐标的原理与方法。利用该控制器可以获得手指在屏上触摸的位置和触摸轻重度信息，通过串行口或并行口将信息传送给计算机，基于这些信息可以设计用户应用程序。该控制器电路及相应的控制软件已全部实现。更多还原

【Abstract】 The circuit of controller for capacitive touch panel is proposed. The circuit is composed of 8751 single chip microcomputer system and corresponding touch sensing circuit. The structure of capacitive touch panel is briefly introduced. The hardware circuit and functions of the controller are also illustrated. The principle and method for determining the coordinates of touched position are also given. Using this controller, the information about the position and touch pressure can be obtained. The information is transmitted to computer by serial or parallel port. Based on this information, users application program can be designed. The controller circuit and corresponding control software have been all realized.更多还原