两个控制595的小程序。保证大家看后可以非常容易的学会使用它以及其他串进并出等器件

				/************************************************************************
				*   名称：四位8×8点阵LED显示                                            *
				*   功能：在点阵上显示“SC51”四个字符                                    *
				*   说明：用HC595作数显列驱动，74HC138作行线控制。                      *
				*************************************************************************/
				#include
				#include
				
				sbit Hc595clk=P2^0;	//Hc595的时钟脚
				sbit Hc595data=P2^1;	//Hc595的数据脚
				sbit Hc595en=P2^2;	//Hc595的使能脚
				
				#define LineCtrl P1  //P1口作为行线控制
				
				unsigned char code FONT8x8[4][8]={
				 				//{0x24,0x14,0x0C,0x04,0x0C,0x14,0x24,0x00 }, //K
				 				//{0x3E,0x02,0x02,0x3E,0x02,0x02,0x3E,0x00 }, //E
				 				//{0x38,0x10,0x10,0x10,0x10,0x10,0x38,0x00 }, //I
								//{0x04,0x04,0x04,0x04,0x04,0x04,0x7C,0x00 }, //L
				 				{0x18,0x24,0x04,0x08,0x10,0x24,0x18,0x00 }, //S	
								{0x78,0x44,0x04,0x04,0x04,0x44,0x78,0x00 }, //C
								{0x3C,0x04,0x04,0x3C,0x20,0x20,0x3C,0x00 }, //5
								{0x10,0x18,0x10,0x10,0x10,0x10,0x38,0x00 }  //1
				 			} ;//横向、逆序取模
				
				//延时子函数
				void delayms(unsigned int ms)
				{
					unsigned int i=100;
					while(ms--)
					{
						while(i--);
						i=10;
					}
				}
				
				//送一个字节
				void SendByte(unsigned char dat)
				{
					unsigned char i;
					for(i=0;i					{
						if(dat&0x80)
						Hc595data=1;
						else
						Hc595data=0;
						Hc595clk=0;
						Hc595clk=1;
						dat=dat					}
				}
				
				//每次显示四个字的一行，八行显示完成，就显示出四个完整字。
				void Display(unsigned char *dat1,unsigned char *dat2,unsigned char *dat3,unsigned char *dat4)
				{
					
					unsigned char i;
					for(i=0;i					{
								
						SendByte(dat1[i]);
						SendByte(dat2[i]);
						SendByte(dat3[i]);
						SendByte(dat4[i]);
						Hc595en=0;
						LineCtrl=i;
						Hc595en=1;
						delayms(10);
					}
				}
				
				//主程序
				void main(void)
				{
					while(1)
					Display(FONT8x8[3],FONT8x8[2],FONT8x8[1],FONT8x8[0]);
				
						
				}