这个范例说明如何使用8051 的Port 1连接到四颗七段显示器，PORT 0的低4位分别控制这四颗共阳七段显示器，让四颗共阳七段显示器使用扫描的方式轮流...

对于有想自己DIY mp3的同志们要注意了，参考参考别人的设计思想也是有必要的，希望这张原理图对大家有帮助！-for a DIY mp3 to their comrades to attention, others refer to the reference design is also necessary, I hope this diagram to help you!

本文介绍了AT89C2051单片机的性能和特点，并在分析了超声波测距原理的基本系统框图。该设计系统经校正后，其测量精度可达0.1米-This paper introduces the AT89C2051 MCU performance and features, and the analysis of the basic principle of ultrasonic distance measurement system block diagram. The design system has been corrected, the measurement accuracy up to 0.1 meters

是关于51单片机C语言编程的与键盘和led接口的电子书-Is about 51 single-chip C language programming interfaces with the keyboard and led the e-book

这是单片机程序，需要一个GSM模块，用单片机控制GSM模块收发短信。-This is the SCM process, which takes a GSM module, using SCM control GSM transceiver module SMS.

ds1302 时钟芯片的资料和c语言通讯程序，调试通过。-ds1302 chip clock information and communication program c language, debugging through.

一本很好的书，关于介绍如何学好单片机的书！ 很适合初学者看哦！-IT is a good book about how to learen the MCU!

22个51单片机的实例，全部带源码和Proteus仿真。-22 of 51 examples of single-chip, all with source and Proteus simulation.

i2c通讯C程序源代码,经测试合格,可以放心使用,请注意时钟周期-i2c communication C program source code, have been tested and qualified, you can rest assured that the use of, please note that clock cycle

基于单片机的无线遥控系统，这是本人精心制作的课程设计，花了将近一个月的时间才完成的。里边有具体的程序代码，全都是仿真通过，并且做出了pcb板，经得起考验的-Based on single-chip wireless remote control system, This is my elaborate curriculum design, has spent nearly a month before the finish. Inside there is a specific code, all the simulation are passed, and made a pcb board, stand the test of

程序用C51实现： 单片机对LCD1602的控制显示 采用总线方式-procedures used C51 : SCM right LCD1602 control shows that using the bus way