用89S51单片机实现对1602的字符显示

C8051F系列单片机SPI端口驱动程序，简洁，高效。-C8051F MCU SPI port drivers, simple and efficient.

LPC900波特率的演示程序-LPC900 The Demonstration Program

自制的串口控制8路光藕隔离输出，可以通过计算机串口控制，8路输出-homemade serial control a variety of eight-channel optical output isolation can be controlled via computer serial port, eight output

用AVR编写的24小时时钟程序，还望采纳-AVR prepared with a 24-hour clock procedures, but also look to adopt

tcp_ip协议栈的ucos代码，主要用于嵌入式系统开发，已经移植到51系统单片机中，通过keil可进行编译，ucos经过最简化改造！特别推荐-tcp_ip CENTER protocol stack code, mainly for embedded system development, has been ported to 51 SCM system, through c51 can be compiled after the most simplified CENTER transformation! Preferred!

基于TC35开发的短消息报警程序，单片机为51兼容系列，汇编实现-TC35 developed based on the short message alarm procedures, single-chip compatible with Series 51, compilations realize

使用结构体形式编写的串行通信的例程，供需要的人参考-Using the structure prepared in the form of serial communication routines for those who need it for reference

开发磁传感器必须用到的文档，很有帮助，文档里有开发的思路。-The development of magnetic sensors to be used in the document, very useful documentation has developed ideas.

飞利浦RC522芯片源代码。该芯片主要针对三表市场和手持设备，支持I2C/SPI/UART接口。 先发布基于普通51单片机的驱动源代码，采用串口接口，无需中断。只要接一个串口，后续会发布基于飞利浦LPC9401的读写源代码！LPC9401也是基于51核，只需连接SPI接口！有公司拿这个源代码卖钱哟-Philips RC522 chip source. The chip targeted at three tables and handheld devices market, support I2C/SPI/UART interface. Based on the first general release 51 MCU-driven source code, using serial interface, without interruption. As long as a serial port access, the follow-up will be issued based on the Philips LPC9401 write source code! LPC9401 is based on the 51 nuclear, only connecting SPI interface! A company with the source code acquisition yo! !

智能门禁系统采用凌阳十六位单片机作为系统控制核心，利用其强大的语音识别功能，不仅实现了语音播放功能，完成了语音提示的要求，而且实现了语音控制门禁系统；利用其内置的Flash闪存，实现了密码的断电保护。除此而外，在键盘输入方面，强大的功能选择键满足了系统的要求；16*2液晶显示器的选择使操作要求清晰明了。此套智能门禁系统强烈体现了其人性化的一面-Intelligent access control system uses the Sunplus 16 single-chip system control as the core, to use its powerful voice recognition features, not only realize the voice playback, the voice prompts to complete the requirements, but also realize the voice control of access control systems the use of its Purchase of Flash memory, realize the power to protect your password. Furthermore, in keyboard input, the choice of powerful features to meet key requirements of the system 16* 2 LCD display options so that operating requirements clear. This set of intelligent access control system strongly reflects its human side