2.3 按键控制单个LED
相关下载:KEIL原工程
1 //--------------------------------------------------------------------------
2 //程序名称: 一个按键控制单个LED;
3 //晶振: 11.0592MHz;
4 //MCU型号: STC89C52RC;
5 //电路板型号: EBV-MV(51实验板);
6 //--------------------------------------------------------------------------
7
8 //--------------------------------------------------------------------------
9 //硬件连接:
10 //EBVn-[VCC] -> MVn-[--VCC--]
11 //EBVn-[GND] -> MVn-[//GND//]
12 //EBVn-[P10] -> MVn-{EX2}-[L1]
13 //EBVn-[P37] -> MVn-{EX14}-[K1]
14 // -> MVn-{EX2}-(VCC)
15 //--------------------------------------------------------------------------
16
17 //--------------------------------------------------------------------------
18 //实验结果:
19 //一个按键控制单个LED,按下按键时LED亮,松开按键时LED灭;
20 //--------------------------------------------------------------------------
21
22
23 //------------------------------------------------------
24 //头文件;
25 #include <AT89X52.H>
26
27
28 //------------------------------------------------------
29 //程序入口;
30 void main(void)
31 {
32 while(1)
33 {
34 P1_0 = P3_7; //P3_7端口的电平状态复制到P1_0端口
35 }
36 }
