单个按键控制多种流水灯状态

更新一个单个按键控制多种流水灯状态的教程，希望能帮助到大家~

所需元器件如下：
STC89C52RC芯片 *1
10K电阻 *2
100Ω电阻 *8
10uF 电解电容 *1
22pF 瓷片电容 *2
12MHz晶振 *1
按键 *2
LED灯 *8

代码如下：

#include"reg52.h"
#define uchar unsigned char
#define uint unsigned int
#define LED P1
sbit KEY=P3^0;

unsigned char code led_1[8]=
{0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};//定义第一种流水灯状态
unsigned char code led_2[8]=
{0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};//定义第二种流水灯状态
unsigned char code led_3[5]=
{0x7e,0xbd,0xdb,0xe7,0xff};//定义第三种流水灯状态
unsigned char code led_4[5]=
{0xe7,0xc3,0x81,0x00,0xff};//定义第四种流水灯状态

unsigned int j,z;   //定义两个无符号整型变量

void delay(uint x)  //延时
{
	uchar i;
	while(x--)
	{
		for(i=0;i<100;i++);
	}
}

void main()
{
	j=1;    //初始化为开机第一种流水灯状态
	while(1)
	{
		if(KEY==0)
		{
			delay(10);
			if(KEY==0)
			{
				j++;
				delay(10);
				if(j>4)
				j=1;
			}
		}
	switch(j)
	{
		case 1:   //第一种流水灯状态
			for(z=0;z<8;z++)
			{
				LED=led_1[z];
				delay(150);
				if(KEY==0)
				{
					delay(10);
					if(KEY==0)
					{
						j++;
						delay(10);
						if(j>4)
						j=1;
					}
				}
			}
		break;
		case 2:   //第二种流水灯状态
			for(z=0;z<8;z++)
			{
				LED=led_2[z];
				delay(150);
				if(KEY==0)
				{
					delay(10);
					if(KEY==0)
					{
						j++;
						delay(10);
						if(j>4)
						j=1;
					}
				}
			}
		break;
		case 3:   //第三种流水灯状态
			for(z=0;z<5;z++)
			{
				LED=led_3[z];
				delay(150);
				if(KEY==0)
				{
					delay(10);
					if(KEY==0)
					{
						j++;
						delay(10);
						if(j>4)
						j=1;
					}
				}
			}
		break;
		case 4:   //第四种流水灯状态
			for(z=0;z<5;z++)
			{
				LED=led_4[z];
				delay(150);
				if(KEY==0)
				{
					delay(10);
					if(KEY==0)
					{
						j++;
						delay(10);
						if(j>4)
						j=1;
					}
				}
			}
		break;
	}
	}
}

仿真电路图如下：