一、总体方案概述采用单片机来实现,原理框图如图1所示。通过键盘的功能键控制单片机实现各个功能,单片机软件编程灵活、自由度大,可编程实现算法和步进电机的控制。并利用程序很容易实现求画笔坐标值并显示输出,利用单片机还可实现准确的计时功能,系统可用数码管显示坐标值和运动的时间。 First, the overall program overview Single-chip to achieve the principle block diagram shown in Figure 1. Through the keyboard function keys to control the microcontroller to achieve various functions, SCM software programming flexibility, large degree of freedom, programmable algorithms and stepper motor control. And use the program is very easy to achieve and find pen coordinates and display output, the use of SCM can also achieve accurate timing function, the system can be used to display digital tube coordinates and exercise time.