232同485转换的pcb图，有需要的只要稍加修改一下就可以了

c8051f340 USB传输 固件驱动， c8051f340 USB传输 固件驱动，-transmission c8051f340 USB drive firmware, c8051f340 USB transmission firmware-driven,

AT mega88 A/D转换的实现 采用的是外部中断进行控制A/D转换-AT mega88 A/D conversion is achieved using an external interrupt to control A/D conversion

DS1302实时时钟的MSP430单片机底层驱动程序 -DS1302 Real Time Clock Driver MSP430 Singlechip bottom

《多功能电能表通信协议》备案文件,DLT645-2007 增补-" Multi-function Watt-hour meter communication protocol" filing documents, DLT645-2007 added to the

随着经济的发展和人民生活水平的提高，自动门的应用也越来越广泛，它已经成为宾馆、超市等现代建筑所必备的，是建筑智能化水平的重要指标。自动门控制系统作为自动门系统的控制核心，决定了自动门系统的性能。国外生产的自动门控制系统性能比较优良，但是价格偏高；国内的同类产品虽然价格便宜，但是性能较差，故障率较高。本文研究一种基于AT89C51的自动门控制系统，功能强大，运行可靠，用户操作方便，而且成本适中，在市场上有较强的竞争力-With the economic development and improve the living standards of the people, automatic door applications more and more widely, it has become a hotel, supermarket, etc. necessary for a modern building, is building an important indicator of the level of intelligence. Automatic door automatic door control system as the core control system, determines the performance of automatic door systems. Foreign production of automatic door control system for excellent performance, but the high price While the domestic price of similar products, but poor performance, a higher failure rate. In this paper, AT89C51-based automatic door control system, powerful, reliable operation and user convenience, and the cost of modest, there is strong in the market on the competitiveness of

该程序在8位-16位单片机上实现TCP/IP协议，含完整 C 语言源码和实现文档。-procedures in the eight to 16-bit microcontrollers to achieve TCP/IP protocol, with a complete C language source code files and achieve.

uC/OS-II在C51下的一个完整的LCD项目源码 ucos 2.0 在C51下应用的一个完整工程，用到了SED1330(LCD320x240)，附带小汉字库自动提取，字库文件自动生成。-uC/OS-II in the C51 of a complete LCD project ucos 2.0 source under the application in the C51 a complete engineering, using the SED1330 (LCD320x240), attached to small汉字库automatic extraction, automatic generation of font files.

51单片机常用子程序大全，包括多字节加减乘除，码字转换，浮点数格式化-51 microcontroller used subroutine Daquan, including multi-byte arithmetic, code conversion, floating point format, etc.

以比较匹配A达到时交替输出高低电平及写入其维持 时间常数之方法实现脉宽调制输出-to compare A match reached the turn at the high output and low-level maintenance time into their methods to achieve constant PWM Output