DMA程序，51单片机

我在开发汉字点阵屏的时候找到的,很有帮助的!-I in the development of the Chinese character dot-matrix screen to find the time to be helpful!

非接触式IC卡读写器,Mifare 1非接触式IC卡读写核心模块MCM2-Design of Mifare Touch- Free IC Card Reader

usb-串 口 转 换pcb板 图,pcb格式-usb-serial conversion pcb map, pcb format

protel快捷键.提高protel布线速度的好资料-Protel shortcuts. Protel Cabling improve the speed of a good information

在8X8　LED点阵上显示柱形，让其先从左到右平滑移动三次，其次从右到左平滑移动三次，再次从上到下平滑移动三次，最后从下到上平滑移动三次，如此循环下去。 -In the 8X8 LED dot matrix display cylindrical, smooth movement from left to right to first three times, followed by a smooth move from right to left three times, once again moving smoothly from top to bottom three times, the last from the bottom-up smoothing mobile three times, so the cycle continue.

一个用51MCU做电流表的产品.源代码.电流精度达到1MA有级别.-Ammeter used to do a 51MCU products. The source code. Current accuracy level 1mA there.

一个电路中电阻计算的小工具，可以快速计算如并联电阻的等效阻值等。很不错-Resistance in a circuit computing a small tool that can quickly calculate the equivalent parallel resistance, such as resistance and so on. Good

　同学自己做的可调整计时器，大家看看！还有各种报告细节哦-students do their adjustable timer, we look at! There are various reports details Oh! !

：介绍一种无人值守的停车场管理系统的设计。该系统前端主要由GsM 短信模块TC35i和AVR 单片机At― megal6组成，安装在停车场的每个进出口，通过接收车主的手机短信控制进出口道闸的开启并由短信扣取停车费用，各进出 口电路都与监控中心计算机连接。-: A unmanned car park management system design. The system front-end GsM messages by AVR module TC35i and At-megal6 composed of single-chip installed in the parking lot of each import or export through SMS to receive the owner to control the import and export of道闸open parking fees deducted by SMS , the import and export of circuits are connected with the monitoring center computer.

stm32实现精确定时源代码，经过验证，可实现-stm32 accurate source code from time to time, after verification, can be realized