可预置的8位计数器程序的主要部分分析 #include <AT89X51.H> //器件配置文件 #define uchar unsigned char //变量类型的宏定义 #define uint unsigned int uchar code SEG7[10]={0x03,0x9f,0x25,0x0d,0x99, //0~9的数码管段码 0x49,0x41,0x1f,0x01,0x09} uchar data cnt[8] //在da

AT89X51的应用 包括电子密码锁,8*8点阵显示,电子琴,温度控制器-AT89X51 applications include electronic password lock, 8 * 8 dot-matrix display, flower, Temperature controller, etc.