I2c classic procedure

本程序是基于FM1702的射频卡读写器的单片机控制的C语言程序，所用单片机为AT89C52.-This procedure is based on the FM1702 RF card reader control of single-chip C-language program, using single-chip microcomputer for the AT89C52.

实时时钟芯片PCF8563 控制C51源程序-real-time clock chip PCF8563 source control C51

10m以太网卡源程序，包括协议，并能很好完成实现以太网通信协议。-10m Ethernet card source code, including the agreement, and can be completed to achieve a good Ethernet communication protocol.

stc89c52rc单片机的应用与配套程序-SCM stc89c52rc application and matching process

本文介绍了一种电子密码锁的实现。该电子密码锁采用1一wire总线芯片Ds2401作为密匙，锁体采用高可靠性的单片机PIC16c63来完成密码识别和开锁控制，用I2C总线接口的EEPROM 芯片AT24c02来完成密码的存储和修改，可 掉电保存密码。整个系统安全可靠，稳定性高。-This paper introduces an electronic code lock realize. The electronic locks used one chip one wire bus Ds2401 as key, lock body for high reliability PIC16C63 microcontroller identification and password to complete the unlock control, with I2C bus interface EEPROM chip AT24C02 to complete the password storage and revised down to save the password. The entire system is safe and reliable, high stability.

详细讲述单片机中SPI接口以及串行接口的原理和编程方法，很有价值-detail microcontroller interface and SPI serial interface and programming method and of great value

基于TI公司的CC1020芯片的无线通讯程序,程序的MCU是TI公司的MSP430系列。-Based on TI

数控直流电源，步进０．１，０－１５Ｖ掉电存储-CNC DC Power Supply, 0.1,0-15V Step-down storage

存储器 24c04 eeprom 51系列 汇编的源代码-Memory 24c04 eeprom 51 Series compilation of source code

二进制小数转为十进制BCD码的汇编程序，结果保留四位并在七段数码管上输出-decimal to binary decimal BCD compilation procedures, and results in four reservations in paragraph 107 digital output tube