C8051F040频率的方

出租车计费系统 里面有相应的键盘扫描程序，以及相应的 显示模块-Taxi billing system there are corresponding keyboard scanning procedures, and corresponding display module

单片机最小系统，两位LED数码管由串口输出接两个164驱动，Lout,Rout为左右声道输出，SET， ALT0， ALT1为三个按键，也可自己在开始的I/O定义改成你想用的I/O口；12M晶振若用89C51则只可装下约14首歌曲，用89C52则可装下近40曲-smallest SCM system, two LED digital serial output from the pipe then two 164-driven, Lout, Rout for about channel output, SET, ALT0, ALT1 to three keys, but also his own in the beginning I/O definition you want to change the I/O port; If using crystal 12M 89C51 can carry only about 14 songs, can be loaded with 89C52 Near 40

lcd驱程,快来下啊-LCD drive way, to come under ah

一个嵌入式系统通过GPRS进行数据传输的程序，协议为5112芯片，其中描述了单片机采用UDP上网和数据传输的过程

Keil串口调试技巧（修订）与列子,虚拟串口的使用，-Keil serial debugging skills (Amendment) Liezi with, the use of virtual serial port,

这篇实验报告是关于单片机多路数据采集的，本实验由2大部分组成：1、为用EPOROM构成的心电信号发生器；2、为多路信号的微机采集与显示；第一部分实验主要研究可编程序存储器EPROM的非计算机应用。把存储在EPROM中的数字心电信号读出并通过D/A转换为模拟信号显示在示波器屏幕上。 第二部分实验的目的是研究一个数据采集系统，该系统利用ECD-51型单片机为中心，由D/A芯片等将各种低频信号以及由EPROM产生的模拟人体心电信号变换成离散的数字信号存入微机内存，以待进行数据处理和分析，然后再通过D/A转换将其还原成模拟信号显示在示波器的屏幕上。 -This experimental report on the multi-SCM data acquisition, the experiment by the two major components : 1. EPOROM pose for the use of the ECG signal generator; 2, multi-path signals in the computer acquisition and display; the first major study of experimental programmable EPROM memory in non-computer applications. Stored in the EPROM of ECG read out by D/A conversion of analog signals displayed on the oscilloscope screen on. Part II The purpose of this experiment is to study a data acquisition system, which uses ECD-51 microprocessor as the center, from the D/A chips, and other various low-frequency signal from EPROM and the simulation of human ECG transform into several discrete signal words into computer mem

dds调试源代码，已经调试好的，可以直接使用，谢谢！-dds debug source code, debugging has been good, and can be used directly, thank you!

LCD1602液晶驱动 单片机为AT98S52-Single-chip LCD driver LCD1602 for AT98S52

基于单片机的红外线发送程序，所用的发射管为普通常用的红外发送二极管-Microcontroller-based infrared to send the procedure, the use of the launch tube commonly used infrared to send as an ordinary diode

初始化键盘的源码，转自网友，给初学者参考-The source code to initialize the keyboard, carried Netizen, a reference to the beginner