EEPROM 24c04其根本是，先往24C02中写数据，然后，读出数据，在数码管中显示，这样直观明了，详细说明，请看程序中注解...

avr单片机用的，有源代码，原理图（包括JTAG和STK500）-avr Singlechip used, active code, schematics (including JTAG and STK500)

rc500 c语言库函数，对RC500的开发提供了捷径-rc500 c language library functions, the development of RC500 provides a shortcut

单片机ＩＯ口不足，用此电路做的键盘电路和程序，就可以了 8条口线24按键的C51源程序 .rar-SCM IO insufficient use of this circuit keyboard circuit and procedures on the eight lines mouth of the 24 keys C51 source. rar

用一片ARM芯片，对电网中的谐波信号进行采集，然后通过GPRS发送给上位机，上位机对采集到的电网中的谐波信号进行分析。以确定电网中谐波的情况。-With an ARM chip, the harmonics of the grid signal acquisition, and then sent to the GPRS PC, PC to the power grid of the collection of harmonic signal analysis. To determine the grid in the case of harmonic.

智能LED电子钟源代码，多年前做的。可能对单片机初学者有用。-intelligent LED electronic Zhong Yuan code, so many years ago. Beginners may be useful to the MCU.

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

L297+L298控制步进电机，用proteus进行仿真-L297+ L298 stepper motor control, using Proteus simulation

绍了一种工业设备中常见的键盘方案实键现思路给 出程一序框图和用语语 C51 言源现思键关序框 -Nesho industrial equipment of a common keyboard keys are thinking it is a sequence diagram-term language and the source of C51 statement is thinking key sequence frame clearance

键盘测试程序，包括显示 、去抖动、扫描、检测，（8051或8031）-keyboard testing procedures, including, to jitter, scanning, detection, (8051 or 8031)

ILI9325 QVGA LCD initial code