功放的电路图，是新款式的，有价值

it can help you use C++ program we

ch451显示和四位共阴极数码管1234-ch451 four common cathode display and digital tube 1234

这是一个八月桂花香的程序，请大家指点，-Baruguihuaxiang This is a process, we instruct them, thank you

1) 东西方向车辆放行20秒钟。即东西方向的绿灯和南北方向的红灯同时点亮20秒钟； 2) 20秒钟后，东西方向的黄灯闪烁2秒钟，以警示车辆将切换红绿灯。此时南北方向仍维持红灯点亮。在南北方向亮红灯期间，在2位数码管上显示计数值（每秒减1），从20减至01。 3) 东西方向的黄灯闪烁2秒钟后，转为南北方向放行20秒钟。即东西方向的红灯和南北方向的绿灯同时点亮20秒钟； 4) 南北方向放行20秒钟后，转为南北方向的黄灯闪烁2秒钟，以警示将切换红绿灯。此时东西方向仍维持红灯点亮。 5) 南北方向的黄灯闪烁2秒钟后，再转为东西方向车辆放行20秒钟。如此循环重复。 -1) direction vehicle release 20 seconds. What is the direction of red and green light at 20 seconds, 2) 20 seconds later, the yellow lights flashing warning vehicles with 2 seconds, switch to the traffic lights. This is still remain red light north-south direction. In the south during the red light, in the direction of the digital display tube of 2 per plan (minus 1), from 20 to 2001. 3) the yellow lights flashing direction to 2 seconds later, the south direction release 20 seconds. What is the direction of the north-south direction of red and green and light 20 seconds, 4) north-south direction after 20 seconds to release the north-south direction, yellow lights flashing warning, with 2 secon

用单片机播放梁祝这首歌，利用89C51单片机-The Butterfly Lovers with MCU Play the song, using 89C51

transmitter receiver program

这是12864 带字库的显示子程序 reset 是初始屏幕的 display 是显示数据的 input是输入地址的指令-This is the 12864 with reset font display subroutine is the initial screen display is to show the data input is the input address command

此系统是本人做毕业设计时候的老东西了，是汇编写的。可以在PROTEUS上仿真，实际效果和仿真效果一模一样，电梯的功能相信大家都很了解，我就不在这多讲了。但要说明的一点是：我这个系统是仿真用的，有些东西不能和现实中的电梯相比，里面可能有某些方面考虑的不是很周到，希望有心的朋友提点意见，谢谢我的E-MAIL:qq317999920@163.com-This system is designed when I graduated to do the old things is a compilation of writing. Be able to PROTEUS on the simulation, the actual results and simulation of the effect of exactly the same as the functions of elevator think we all understand that I am not in this more than a speech. But the point is to explain: I used this system is the simulation of, some things can not be compared to the reality of the elevator, which may have to consider certain aspects of the not very thoughtful, I hope interested提点意见Friend, thank you my E-MAIL: qq317999920@163.com

大家再看看吧-We look and see

利用8051芯片制作一个数字电压表，能够测量电压并用4段数码管显示。-Manufactures a digital voltmeter using 8051 chips, can survey the voltage and demonstrate with 4 sections of nixietubes.