Buzzer buzzer ring to change the frequency by changing the delay time if the buz...

AT89C51单片机的超声波测距的原理图及汇编程序-AT89C51 microcontroller schematic diagram of ultrasonic ranging and assembler

凌阳IED2.0.0，全国大学生电子设计竞赛数控直流源的凌阳代码-Sunplus IED2.0.0, National Undergraduate Electronic Design Contest NC Sunplus DC source code

这个源代码是关于MCS-51的无线接收，用89S52控制MT8870B进行DTMF解码。程序相当的经典，本人调试了几周后，达到了非常好的效果。误码率相当的小。我觉得好东西要大家分享的，所以今天我上传此代码，与大家共同分析进步。-the source code is on the MCS-51 wireless receiver, S52 control with 89 MT8870B for DTMF decoder. Quite the classic procedure, I debug a few weeks later, to achieve very good results. The error rate is very small. I think that good things should be shared, so I upload this code, and the analysis of common progress.

此程序为单片机开发过程中的按键扫描程序。采用汇编 语言编写，经调试通过。-procedure for microcontroller development process button scanning procedures. Using language compilation, debugging through.

HID usb设备的单片机固件程序，能自己用单片机控制鼠标。-HID usb device microcontroller firmware to control their mouse using single-chip microcomputer.

用8253-8255编写的定时响铃程序 可以定时两个时间点，很经典的程序-spent 8253-8255 prepared by the regular beep procedures regular two points in time, classic procedures

一款有mega16编写的抛球颠峰游戏,程序完全经典-Mega16 has prepared a drop top games, the procedure completely classical

主要介绍以单片机 "7$ &’($ 为 $)* 的无功补偿仪中 +,8 ."’/8. 液晶显示器的应用$ 详尽讨论了对于 +,8 ."’/8. 液晶显示器的电路连接与软件控制方法#并对其应用的独特之处做了细致的分析$ 关键词!单片机’+,8 ."’/8. 的应用’液晶显示器-EHIGJKKLMNJOMPQGPRG+,- ."’/-.S@$:TGMQGOHIGUIVMNIGRPWGWIJNOMVIGNPXKIQ6JOMPQGYJ6IUGPQG"7N &’ZNGXMNWP KWPNI66PWGM6GMQOWPU[NIUGMQGOHM6GKJKIWDGEHIGKIWMKHIWJLGNMWN[MOGRPWG+,8 ."’/8.S@$:TGJQUGOHIG6PROJWIGOPGNPQOWPLG +,8 ."’/8.S@$:TGM6GILJYPWJOIUGMQGOHM6GKJKIWDG][WOHIWGXPWI EHM6GKJKIWGJQJL^_I6GOHIG[Q[6[JLGNHJWJNOIWM6OMNGPRG JKKLMNJOMPQGPRG+,- ."’/-.S@$:TD

Keil下的拼音输入法源码，很经典的好东东哦！-Keil under the Pinyin input source, the classic Eastern Oh good!

学习C51的同学， 可以看看这个 ， 有了这个， 保你学习进度可以提升3成速度。-If you wanna learn C51 more fast, this resoure maybe give you a helper.