超声波测距,包括有pcb原理图，用c写的程序，还有详细的说明

掌握单片机的应用开发需要一个过程。首先必须掌握数字电路和模拟电路方面的知识，还必须学习单片机原理、硬件结构、扩展接口和编程语言。-master SCM application development requires a process. One must first master digital circuits and circuit simulation in terms of knowledge, must also learn SCM principle, hardware structure, expansion interfaces and programming languages.

主要是51单片机的全套应用及其程序源代码-Is a complete set of 51 single-chip applications

BC31 TC30 编译过，可运行。 -BC31 TC30 compiled can be run.

用AVR单片机实现的时钟芯片DS1302的SPI驱动，进行数据传输-With the AVR MCU clock chip DS1302 SPI-driven data transmission

pic控制的led灯的循环点亮模式，八个LED，高电平点亮，可用于I/O口及其它信号状态的观测。-pic control led cycle lights lit mode, eight LED, high light, can be used for I/O signal state of the mouth and other observations.

smart board 测试程序原代码-smart board the original test procedure code

C51 用PCA 模拟串口，很有参考价值得源码-C51 with PCA serial analog, a valuable source

C51单片机实现红外探测 可以探测是否有障碍物及入侵者 数据通过串口格式化 38 KHZ载波-C51 MCU infrared detectors can detect whether there are any obstacles and invaders through serial data format 38 kHz carrier

easyarm1138用c语言开发的液晶lcd12864并行口显示-easyarm1138 c lcd12864

十五路遥控开关控制器 本程序为接受程序根据此程序可增加遥控路数-Road 15 remote-control switch controller procedures for the acceptance of this procedure in accordance with this procedure can increase the remote control approach