use PIC16F628 and U2280 Access Control Construction machine, a schematic diagram

介绍了在使用pdiusbd12进行usb开发时常遇到的问题以及回答。-Describes the development of the use of pdiusbd12 to usb problems and to answer questions from time to time.

AD0809 在51 单片机中的应用.pdf-AD0809 in 51 MCU. Pdf

AT89c51单片机7279驱动键盘数码管程序-7279 driver keyboard AT89C51 single-chip digital control procedures

我制作过的usbisp资料, 仅供参考 -produced by usbisp information for reference

usb host的驱动程序,用于实现usb端口的初始化等-usb host driver for the usb port initialization realize such

AVRX 操作系统,用汇编语言编写，是AVR单片机专用的操作系统-AVRX operating system, with the compilation of languages is a dedicated operating system AVR Singlechip

关于GPS和c8051f系列的一个新思路 希望对大家有用 多多指教多多交流-On the GPS and c8051f series of a new idea we want to encourage more exchanges between useful to the exhibitions

在电子技术中，频率是最基本的参数之一，又与许多电参量的测量方案、测量结果都有十分密切的关系，因此频率的测量就显得更为重要。测量频率的方法有多种,其中电子计数器测量频率具有精度高、使用方便、测量迅速，以及便于实现测量过程自动化等优点，是频率测量的重要手段之一。在本次毕业设计中我们选择使用单片机来制作数字频率计，并在实际制作中采用了直接测频法。利用延时产生的时基门控信号来控制闸门，通过在单位时间内计数器记录下的脉冲个数计算出输入信号的频率，最终送入LCD中显示。这样制作出来的频率计不仅可以满足设计题目的参数要求，而且具有了单片机的稳定性和成熟性，且控制能力强，是一种低成本，高可靠的设计方案。-In electronic technology, the frequency is one of the most basic parameters, but also with a number of electrical parameters of the measurement program, the measurement results have a very close relationship between the frequency of measurement, therefore it is even more important. Measurement of the frequency of a number of means, electronic measurement of the frequency counter with high precision, easy to use, rapid measurement, and measurement is easy to realize the advantages of process automation is an important means of measuring the frequency of one. Graduates in this design we have chosen to make use of single-chip digital frequency meter, and used in the actual production of a direct

H6152读Mifare射频卡通信.zip-H6152 Reading Mifare RF card communications. Zip

AVR单片机的TWI（IIC）总线功能驱动函数库，可直接调用本函数库驱动24C08等IIC器件。-AVR microcontroller TWI (IIC) bus function driver functions can directly call this function, database-driven 24C08 devices such as IIC.