我用51单片机串行通信方式去控制一块8×8LED点阵屏,显示的时候,文字闪烁厉害…… , 51单片机LED点阵屏有灯不亮怎么办?

没必要循环初始化你的LCD，将初始化程序放到主函数中。你的显示函数中也已经包含了清屏指令，不需要在while里面再次加入清屏指令。如果一定要用，建议你在所有清屏指令后加入的延时够大。清屏指令过多，延时太少的话，相当于

^_^，我以前做个一个类似的项目，经验认为一般每一行使用1~2ms就可以了，也就是说实际应用中20ms内完成一个周期一般是没有问题的，频率太高，显示会变暗，频率太低就会闪烁，下面是部分代码，原程序还有一个红外遥控输入

按照人的常规的视觉停留的频率计算就行了，一般地，扫描频率要50HZ以上肉眼看起来就不闪烁，就拿50HZ阀值，那么一个点阵显示的时间为1S/50=20mS,即需要20mS后再对它进行扫描；但是你每行是5mS,那么一共有8行，重复扫描时

另外如果你的51还要执行别的运算，应尽量减少它们的时间，也就是让51的绝大部分时间都在驱动LED“显示”。如果还不行，那就只能在LED驱动一侧加锁存器了。

我用51单片机串行通信方式去控制一块8×8LED点阵屏,显示的时候,文字闪烁厉害……

最简单的，发送端：按一下键发一个脉冲；接收端：进行脉冲计数，用led显示。发送端：//12M晶体 include "reg51.h"define KeyB P1^6 define OutPin P1^7 bit Key1,Key2;//timer init 20ms定时中断

按一定的振荡频率供电红外光发射管，接收红外光管的振荡频率与发射的频率相同，在有效发射、接收角度及无障碍距离就能接收到红外光工作。

LED发射管也可以称作红外发射管或红外线发射二极管，属于二极管类。它是可以将电能直接转换成近红外光（不可见光）并能辐射出去的发光器件，主要应用于各种光电开关及遥控发射电路中。LED发射管的结构、原理与普通发光二极管相近

红外接收管的作用是进行光电转换，在光控、红外线遥控、光探测、光纤通信、光电耦合等方面有广泛的应用。

做为刷新的零点。转速不是绝对稳定的，延时不是绝对准确的。无论程序执行到哪里，只要收到信号就会以此为零点开始刷屏，物理位置不会变。旋转led是由直流电机的高速旋转，带动了若干个LED，由单片机芯片控制LED的亮灭，利用人

基于51单片机的旋转led屏中,红外接收管还有红外发射管的作用是什么?

LED显示屏是利用发光二极管点阵模块或像素单元组成的平面式显示屏幕。它具有发光率高、使用寿命长、组态灵活、色彩丰富以及对室内外环境适应能力强等优点。广泛运用于机场、车站，码头、商店、学校、银行等公共场合的信息发布和广

该电路所设计的电子屏可显示10个汉字,需要40个8×8 LED点阵模块,可组成16×160的矩形点阵。由于AT89C52仅有8k存储空间,而显示的内容由PC机控制,因此不可能预先把需要显示的内容做成点阵存在单片机中,而只能由PC机即时地把所需显示的点阵

1.1 方案论证 从理论上讲,不论显示图形还是文字,只要控制与组成这些图形的或文字的各个点所在位置相对的LED器件发光,就可以得到我们想要的显示结果,这种同时控制各个发光电亮灭的方法称为静态驱动显示方式。16×16LED的点阵共

74LS164再接ULN2803以对电流放大后再接16×16点阵。74LS164的移位触发端A、B可以接上一片的相邻输出端，Q1或Q7这样实现能实现多个芯片连续移位，以实现显示屏汉字从右到左或从左到右的移动显示功能。由于百度知道不能插入图片

基于51单片机的LED点阵显示屏系统的设计与实现的论文

如果屏某一区域出现花屏，检查屏幕后面扁平线是否插实。如室内屏出现某一行常亮或不亮，是显示板的三极管出现故障 以上就是关于LED点阵屏常见问题及解决办法的介绍，希望对大家能有所帮助。通过以上仔细的介绍，对于LED点阵屏

关于你的led怎么都不亮：原因可能是连接的方法不太对，你可以参考下述连接方式，检查一下你的电路。方法1：用8050的三极管做开关电路，三极管的基极接p2.0，然后用集电极通过led接5v电源，发射极通过220欧姆电阻接地。执行setb

你先要确定是的是P1.0接的发光二极管？如果不是那当然没用了。其次你要确定你的的硬件是高电平还是低电平亮发光二极管。我觉得是你没把硬件搞清楚。

573，你把输入、输出，弄反了。单片机引脚，应该接到 573 的 D 端。LED，应该接到 573 的 Q 端.

可进入调试模式，在执行22句后，检查595数据，看看其输出是不是 0xaa，在执行23句后，检查P0口数据，看看是不是 0x7f；

51单片机LED点阵屏有灯不亮怎么办?

你写的程序并没有加载到工程中，只是写了程序没有用的，不加到工程中，是不能编译的。程序是对的。见下图，首先要把写的程序保存，然后在画红圈的位置，点鼠标右键，把这个程序加进来，加载进来后，左边应该是那样的。

首先从你给出的条件来说：你用sbit 声明led1来代表P1^0口，但是在主函数中却使用led来点亮，很明显这个是不行的，而且编译时会报错。再一个你要确定LED是连在P1口。最后，你要清楚是共阴还是共阳接法，这样决定是写1

硬件电路的led灯正负极接反了。

现在主要是你得确保你电路没有问题，一般情况下 LED正极串限流电阻接VCC，负极接单片机引脚，低电平亮高电平灭，如果你是 LED正极接单片机引脚，负极接地的话，高电平不一定亮哦，有的单片机引脚输出没有那么大电流的。

按S3，S4键的状态应该能实现。S1，S2的状态是流水灯，用到了库函数cror，crol，要用P0的原状态，但P0口没加上拉电阻，读不到P0的高电平。仿真图把P0改成P2口接LED灯，试一下吧。程序中的P0都改成P2。

你程序最后的运行结果是不是所有LED都亮了，如果是这样的话，就是可能你P0口没有加上拉电阻，单片机P0不加上拉电阻的话，是输出不了高电平的。还有，楼主以后问程序问题的同时，最好也把硬件电路图给出，这样大家也才好

51单片机 不能让LED闪烁为什么

1、新建项目，如图所示。 2、添加头文件，创建延迟函数。 3、创建C主函数。 4、添加死循环效果。 5、点亮LED灯。P1=0x7e;二进制11111110。 6、添加延迟效果。 注意事项： 很多公司都有51系列的兼容机型推出，今后很长的一段时间内将占有大量市场。51单片机是基础入门的一个单片机，还是应用最广泛的一种。需要注意的是51系列的单片机一般不具备自编程能力。
在第一个for的时候，“a”的初始值是“30000”， 在第二个for的时候，“a"的初始值是第一个for循环里a自减后的值，也就是说第二个for的时候“a”的值已经为0了 void man() { int a; while(1) { led1 = 1; for(a=30000; a>0; a--); led1 = 0; for(a=30000; a>0; a--); } }
573，你把输入、输出，弄反了。 单片机引脚，应该接到 573 的 D 端。 LED，应该接到 573 的 Q 端.
不用的电脑自然问题也是不一样的，我们来一起分析分析。
我做过点阵显示，基于protues仿真的，有图有程序，仿真效果还不错，但没写成论文，要不？
给你一个源代码吧，自己分析，用汇编写的。本人编写后亲试过，只要一片C8052S的最少系统就能工作 驱动市售＄5.0单元板（32*64）。 ;============================================ ; 32*64点阵屏左滚动显示n个汉字程序 ;============================================ D_FR0 EQU 40H ;第一个显示数据缓冲器 D_FR1 EQU 70H D_MB EQU 30H ;数据位移动次数寄存器 D_AM EQU 31H ;显示半角字个数寄存器 DAMT EQU 32H ;显示半角字个数倍数寄存器 OFFSET EQU 33H ;数据指针偏移量 RED0 BIT P1.4 RED1 BIT P3.1 RCK BIT P1.5 ;锁存信号线 SCK BIT P1.6 ;移位时钟信号线 EN BIT P1.7 ;消隐信号线 ;--------程序入口地址---------------- ORG 0000H JMP START ORG 0030H ;==================================== ; 初始化 ;==================================== START: CLR A MOV 60H,A MOV 61H,A MOV 62H,A MOV 63H,A MOV SP, #0AH ;修改堆栈指针 MOV R7, #5 MOV R0,#D_FR0 MOV R1,#D_FR1 ST1:MOV @R0,A MOV @R1,A INC R0 INC R1 DJNZ R7, ST1 ;40H-44H MOV R7, #20H MOV R0, #D_MB ST2:MOV @R0, A INC R0 DJNZ R7, ST2 ;寄存器清0 , MOV P1, #0ffH MOV DPTR,#TABLE1 MOV 62H,DPL MOV 63H,DPH MOV DPTR,#TABLE2 MOV 64H,DPL MOV 65H,DPH MOV DAMT,#1;显示的半角字的个数的倍数 MOV R4, #2 ;==================================== ; 主程序 ;==================================== MAIN: MOV R5, #16 ;扫描16行 MOV OFFSET, #00H ;数据指针偏移量清0 MA1:CALL QUSHU ;调用取数子程序 CALL DSEND ;调用发送子程序 clr EN ;关显示 inc P1 ;修改行值 CLR RCK SETB RCK ;锁存显示数据 setb EN ;开显示 DJNZ R5, MA1 ;16行未完继续 DJNZ R4, MAIN MOV R4,#5 ;移动速度 INC D_MB MOV A,D_MB CJNE A, #8,M_OUT MOV D_MB, #0 ;1个半角字符要移动8次 MOV A,#16 MOV DPL,62H MOV DPH,63H ADD A,DPL MOV DPL,A MOV 62H,DPL MOV A,DPH ADDC A,#00H MOV DPH,A MOV 63H,DPH MOV A,#16 MOV DPL,64H MOV DPH,65H ADD A,DPL MOV DPL,A MOV 64H,DPL MOV A,DPH ADDC A,#00H MOV DPH,A MOV 65H,DPH INC D_AM MOV A,D_AM CJNE A, #30,M_OUT ;显示的半角字符的个数 MOV D_AM, #00H DJNZ DAMT, M_OUT MOV DAMT, #1 ;显示的半角字的个数的倍数 MOV DPTR,#TABLE1 MOV 62H,DPL MOV 63H,DPH MOV DPTR,#TABLE2 MOV 64H,DPL MOV 65H,DPH MOV P1,#0ffH M_OUT: JMP MAIN ;=================================== ; 取一行数子程序 ;=================================== QUSHU: MOV R7,#9 MOV R0,#D_FR0 MOV DPL,62H MOV DPH,63H PUSH DPL PUSH DPH MOV A,OFFSET QUSHU1: ADD A,DPL MOV DPL,A MOV A,DPH ADDC A,#00H MOV DPH,A CLR A MOVC A,@A+DPTR MOV @R0,A INC R0 MOV A,#16 DJNZ R7,QUSHU1 POP DPH POP DPL MOV 62H,DPL MOV 63H,DPH QUSHU2: MOV R7,#9 MOV R0,#D_FR1 MOV DPL,64H MOV DPH,65H PUSH DPL PUSH DPH MOV A,OFFSET QUSHU3: ADD A,DPL MOV DPL,A MOV A,DPH ADDC A,#00H MOV DPH,A CLR A MOVC A,@A+DPTR MOV @R0,A INC R0 MOV A,#16 DJNZ R7,QUSHU3 POP DPH POP DPL MOV 65H,DPH MOV 64H,DPL INC OFFSET RET ;=================================== ; 数据发送子程序 ;=================================== DSEND: MOV R0,#D_FR0 ;第一个显示数据缓冲区地址放人R0 MOV R1,#D_FR1 MOV R6,#8 ;发送n字节(1行) DSE1:MOV R7,#8 ;每次发送8位 MOV 60H,@R0 MOV 61H,@R1 ;显示数据放入A CPL 60H cpl 61H;取反A DSE2: MOV A,60H RLC A ;将A的内容按位移入C MOV RED0,C ;将C的内容送数据总线 MOV 60H,A MOV A,61H RLC A MOV RED1,C MOV 61H,A CLR SCK SETB SCK ;输出移位脉冲 DJNZ R7, DSE2 INC R0 INC R1 ;修改地址指针 DJNZ R6, DSE1 ;--------屏幕左移一位--------------- MOV A,D_MB ;移动位次数放入A JZ TAMEND ;为0转移 MOV R7,D_MB ;移动位次数放入R7 MOV 60H,@R0 MOV 61H,@R1 cpl 60H ;移入的数据存入A CPL 61H DSE3:MOV A,60H RLC A ;将A的内容按位移入C MOV RED0,C ;将C的内容送数据总线 MOV 60H,A MOV A,61H RLC A MOV RED1,C MOV 61H,A CLR SCK SETB SCK ;输出移位脉冲 DJNZ R7, DSE3 ;移位次数未完继续 ;--------移位时间修正--------------- TAMEND: CLR C ;清C MOV A, #100 SUBB A,D_MB ;需要再延时的次数 JZ D_OUT MOV R7, A TA1: NOP NOP NOP NOP DJNZ R7, TA1 ;空操作(延时) D_OUT: RET ;==================================== ; 文字编码表 ;==================================== TABLE1: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H,00H,0FCH,04H,45H,46H,28H,28H,10H,28H,24H,44H,81H,01H,02H,0CH DB 80H,80H,80H,0FCH,04H,48H,40H,40H,40H,40H,0A0H,0A0H,10H,08H,0EH,04H DB 00H,41H,26H,14H,04H,04H,0F4H,14H,15H,16H,14H,10H,10H,28H,47H,00H DB 00H,84H,7EH,44H,44H,44H,44H,0C4H,44H,54H,48H,40H,40H,46H,0FCH,00H DB 01H,21H,11H,09H,09H,01H,0FFH,04H,04H,04H,04H,08H,08H,10H,20H,40H DB 00H,08H,0CH,10H,20H,04H,0FEH,40H,40H,40H,40H,40H,42H,42H,3EH,00H DB 10H,10H,51H,51H,52H,54H,58H,50H,57H,54H,54H,54H,54H,14H,17H,14H DB 80H,80H,04H,0FEH,00H,80H,60H,24H,0FEH,44H,44H,44H,44H,44H,0FCH,04H DB 00H,01H,03H,03H,03H,03H,03H,01H,01H,01H,00H,01H,03H,01H,00H,00H DB 00H,80H,0C0H,0C0H,0C0H,0C0H,0C0H,80H,80H,80H,00H,80H,0C0H,80H,00H,00H DB 00H,40H,30H,17H,00H,02H,0F1H,10H,10H,10H,10H,11H,12H,28H,47H,00H DB 80H,40H,48H,0FCH,10H,10H,20H,0A0H,40H,40H,0A0H,10H,10H,06H,0FCH,00H DB 00H,3FH,21H,21H,3FH,21H,21H,21H,3FH,01H,01H,7FH,01H,01H,0FFH,00H DB 08H,0FCH,08H,08H,0F8H,08H,08H,08H,0F8H,00H,08H,0FCH,00H,04H,0FEH,00H DB 0FH,08H,08H,0FH,08H,08H,0FH,00H,0FFH,01H,09H,09H,09H,15H,23H,40H DB 0E0H,20H,20H,0E0H,20H,20H,0E0H,04H,0FEH,00H,20H,0F0H,00H,00H,06H,0FCH DB 42H,32H,12H,02H,9FH,62H,22H,0FH,18H,28H,0C8H,48H,48H,4FH,48H,40H DB 04H,3EH,24H,24H,0E4H,3CH,0A4H,0E4H,0A4H,0BCH,0A4H,0A4H,0A4H,0A4H,54H,88H DB 04H,04H,04H,04H,04H,7CH,04H,04H,04H,04H,04H,04H,1CH,0E4H,44H,00H DB 80H,80H,88H,98H,0A0H,0C0H,80H,80H,80H,80H,80H,80H,82H,82H,7EH,00H DB 01H,09H,09H,11H,11H,20H,03H,0CH,3FH,0C8H,0FH,08H,0FH,08H,0FH,08H DB 00H,20H,10H,0CH,24H,0C0H,00H,08H,0FCH,08H,0F8H,08H,0F8H,08H,0F8H,08H DB 01H,01H,7FH,41H,81H,02H,02H,05H,09H,18H,28H,48H,88H,0AH,0CH,08H DB 00H,00H,0FEH,02H,04H,00H,08H,18H,20H,0C0H,80H,40H,30H,0EH,04H,00H DB 04H,04H,04H,04H,44H,24H,24H,14H,14H,14H,14H,04H,04H,04H,0FFH,00H DB 40H,40H,40H,40H,44H,44H,48H,48H,50H,50H,60H,40H,40H,44H,0FEH,00H DB 04H,0EH,0F8H,08H,08H,0FEH,08H,1CH,1AH,29H,28H,48H,88H,08H,08H,08H DB 10H,10H,90H,50H,10H,90H,50H,14H,1EH,0F0H,10H,10H,10H,10H,10H,10H DB 22H,11H,11H,00H,7FH,40H,80H,1FH,00H,01H,0FFH,01H,01H,01H,05H,02H DB 08H,08H,10H,20H,0FEH,02H,04H,0E0H,40H,84H,0FEH,00H,00H,00H,00H,00H DB 00H,78H,4FH,54H,58H,63H,50H,48H,4FH,48H,68H,50H,41H,41H,42H,4CH DB 80H,40H,0FEH,02H,14H,0F8H,00H,08H,0FCH,0A0H,0A0H,0A0H,22H,22H,1EH,00H DB 06H,0F8H,11H,11H,0FFH,39H,55H,91H,11H,0FEH,24H,44H,28H,11H,2AH,44H DB 40H,84H,0FEH,24H,24H,0FCH,24H,44H,0FCH,40H,60H,0A0H,0A8H,22H,22H,1EH DB 01H,01H,01H,0FFH,01H,01H,01H,3FH,00H,02H,11H,50H,50H,90H,0FH,00H DB 00H,00H,04H,0FEH,00H,00H,10H,0F8H,00H,00H,80H,84H,12H,12H,0F0H,00H DB 82H,44H,29H,0FEH,10H,11H,7CH,10H,10H,0FEH,11H,12H,10H,20H,21H,40H DB 00H,04H,0DEH,44H,44H,54H,0CCH,44H,44H,0CCH,54H,64H,44H,44H,54H,88H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,30H,1EH,0FH,07H,00H,00H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H DB 01H,01H,7FH,01H,05H,09H,31H,0C1H,0FH,00H,01H,7FH,01H,01H,05H,02H DB 00H,08H,0FCH,00H,40H,30H,0EH,04H,0E0H,40H,88H,0FCH,00H,00H,00H,00H DB 08H,08H,08H,08H,0FEH,08H,18H,1CH,2AH,28H,49H,8AH,08H,08H,08H,08H DB 20H,20H,20H,24H,0FEH,20H,60H,70H,0A8H,0AEH,24H,20H,20H,20H,20H,20H DB 00H,7FH,40H,40H,5FH,40H,40H,4FH,48H,48H,48H,48H,4FH,48H,40H,40H DB 04H,0FEH,04H,24H,0F4H,04H,24H,0F4H,24H,24H,24H,24H,0E4H,24H,14H,08H DB 22H,11H,11H,00H,7FH,40H,80H,1FH,00H,01H,0FFH,01H,01H,01H,05H,02H DB 08H,08H,10H,20H,0FEH,02H,04H,0E0H,40H,84H,0FEH,00H,00H,00H,00H,00H DB 10H,10H,22H,7FH,42H,43H,42H,42H,7EH,42H,42H,42H,42H,7EH,42H,00H DB 40H,40H,44H,7EH,84H,04H,04H,84H,64H,24H,04H,04H,04H,04H,28H,10H DB 08H,08H,08H,17H,10H,30H,50H,90H,17H,10H,10H,10H,10H,10H,1FH,10H DB 80H,40H,44H,0FEH,40H,40H,40H,48H,0FCH,40H,40H,40H,40H,44H,0FEH,00H DB 02H,07H,38H,20H,20H,3EH,22H,22H,22H,3EH,22H,20H,21H,42H,84H,00H DB 08H,1CH,0E0H,80H,80H,84H,0FEH,88H,88H,88H,88H,88H,08H,08H,08H,08H DB 00H,01H,03H,03H,03H,03H,03H,01H,01H,01H,00H,01H,03H,01H,00H,00H DB 00H,80H,0C0H,0C0H,0C0H,0C0H,0C0H,80H,80H,80H,00H,80H,0C0H,80H,00H,00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H TABLE2: DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 01H,01H,02H,04H,08H,12H,21H,0C0H,00H,1FH,00H,00H,00H,00H,00H,01H db 00H,00H,80H,40H,20H,10H,8EH,84H,00H,0F0H,10H,20H,20H,40H,80H,00H DB 00H,7FH,01H,01H,01H,01H,0FFH,01H,02H,02H,04H,04H,08H,10H,20H,0C0H db 08H,0FCH,00H,00H,00H,04H,0FEH,00H,80H,80H,40H,40H,20H,10H,0EH,04H DB 00H,08H,7DH,4AH,4CH,4BH,4AH,7AH,4AH,4BH,4AH,48H,78H,49H,02H,04H db 80H,80H,0F8H,10H,24H,0FEH,44H,44H,44H,0FCH,64H,0A0H,0A2H,22H,1EH,00H DB 01H,01H,01H,01H,01H,01H,01H,01H,01H,01H,01H,01H,01H,01H,0FFH,00H db 00H,00H,00H,00H,10H,0F8H,00H,00H,00H,00H,00H,00H,00H,04H,0FEH,00H DB 02H,02H,0FFH,04H,04H,0FH,08H,18H,2FH,48H,88H,0FH,08H,08H,08H,08H db 00H,04H,0FEH,00H,10H,0F8H,10H,10H,0F0H,10H,10H,0F0H,10H,10H,50H,20H DB 01H,01H,01H,01H,01H,7DH,05H,05H,09H,09H,11H,21H,41H,81H,05H,02H db 00H,00H,00H,08H,18H,20H,0C0H,80H,40H,20H,10H,0EH,04H,00H,00H,00H DB 00H,7CH,44H,49H,48H,50H,48H,4BH,44H,45H,45H,69H,51H,41H,41H,41H db 20H,20H,28H,0FCH,20H,20H,24H,0FEH,20H,24H,24H,24H,24H,24H,0FCH,04H DB 00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,00H,60H,20H,20H,40H DB 08H,0BH,12H,12H,23H,4AH,8AH,13H,32H,52H,92H,12H,12H,12H,13H,12H db 08H,0FCH,08H,08H,0F8H,08H,08H,0F8H,84H,8CH,50H,20H,10H,88H,0EH,04H DB 00H,1FH,10H,10H,1FH,10H,10H,1FH,14H,44H,34H,14H,04H,04H,0FFH,00H db 10H,0F8H,10H,10H,0F0H,10H,10H,0F0H,50H,44H,4CH,50H,40H,44H,0FEH,00H DB 10H,10H,10H,1EH,22H,33H,4AH,0A4H,14H,08H,11H,22H,40H,24H,24H,40H db 20H,20H,28H,24H,20H,0FEH,20H,50H,50H,88H,0EH,04H,00H,48H,46H,02H DB 04H,0EH,78H,08H,08H,0FFH,08H,08H,0AH,0CH,18H,68H,09H,0AH,28H,10H db 80H,0A0H,90H,90H,84H,0FEH,80H,90H,90H,60H,40H,0A0H,20H,14H,14H,0CH DB 10H,12H,11H,24H,24H,64H,0A4H,24H,24H,24H,24H,24H,24H,24H,24H,24H db 00H,04H,7EH,84H,04H,04H,04H,04H,04H,04H,04H,04H,04H,04H,14H,08H DB 00H,7FH,10H,10H,10H,08H,08H,04H,04H,02H,01H,02H,04H,08H,30H,0C0H db 00H,0F0H,10H,10H,20H,20H,40H,40H,80H,80H,00H,80H,40H,30H,0EH,04H DB 10H,10H,10H,13H,0FCH,10H,14H,18H,30H,0D0H,10H,10H,10H,10H,50H,20H db 00H,00H,04H,0FEH,20H,20H,20H,20H,20H,20H,20H,20H,20H,20H,0A0H,40H DB 00H,0FFH,00H,00H,01H,01H,03H,05H,09H,11H,21H,41H,01H,01H,01H,01H db 04H,0FEH,80H,80H,00H,00H,40H,20H,18H,0CH,04H,00H,00H,00H,00H,00H DB 00H,40H,20H,17H,00H,00H,0F1H,10H,10H,10H,10H,10H,10H,28H,47H,00H db 10H,10H,10H,0FCH,10H,10H,10H,90H,90H,10H,10H,50H,20H,06H,0FCH,00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H DB 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H, 00H END
红外接收管灵敏度有限，要加放大和滤波电路，所以一般用一体化接收头，如TL1838,三个脚，一个接电源＋，一个接地，另一个是输出，可直接接单片机　
　　红外发射模块用51单片机编程使用:用定时器中断来做，红外发送引脚连接到P1.0口， 计数一下定时初值（让P1.0的翻转频率为38KHZ），进定时器中断就对P1.0取反，这样红外就发送出去了。 　　红外线发射管（IR LED）也称红外线发射二极管，属于二极管类。它是可以将电能直接转换成近红外光（不可见光）并能辐射出去的发光器件。 　　红外线发射管（IR LED）也称红外线发射二极管，属于二极管类。它是可以将电能直接转换成近红外光（不可见光）并能辐射出去的发光器件，主要应用于各种光电开关、触摸屏及遥控发射电路中。红外线发射管的结构、原理与普通发光二极管相近，只是使用的半导体材料不同。红外发光二极管通常使用砷化镓（GaAs）、砷铝化镓（GaAlAs）等材料，采用全透明或浅蓝色、黑色的树脂封装。
5ms×8=40ms（25次/秒），这只是人眼视觉暂留的下限。 我觉得你至少应该提高4~5倍的刷新速度才行（例如每行显示1ms）。 另外如果你的51还要执行别的运算，应尽量减少它们的时间，也就是让51的绝大部分时间都在驱动LED“显示”。 如果还不行，那就只能在LED驱动一侧加锁存器了。
你好，你那个U2是什么器件？请说明一下。或者把这个仿真文件直接发过来，实现比较快。