80c51f020，i2c管理时钟芯片PCF8583,

一个只有1台计算主机的智能安防报警系统,大规模系统的工作原理是一样的,自己扩展就可以了-Only 1 of a host of intelligent computing security alarm system, large-scale system, the working principle is the same, their expansion can be a

spansion公司的NorFlash:s29al004d的驱动代码。16位读取方式。在东芝32位CPU：TMP92ca25上调试通过。NorFlash的驱动方式基本上相同，其它品牌的NorFlash只需略微修改程序即可。-the NorFlash : s29al004d driver code. 16 reading. The Toshiba 32 CPU : TMP92ca25 on debugging through. NorFlash driven essentially the same way that other brands NorFlash only slightly modified procedures.

使用PIC芯片控制U2270读取125KHz ID卡卡号，因为所使用的PIC资源很少，此程序极为精简，包含中断曼切斯特解码和校验全过程，非常实用。-The use of PIC chip control U2270 Read 125KHz ID card number, because the use of PIC scarce resources, this program is extremely streamlined, with interruption of Manchester decoding and checking the whole process is very useful.

4*4矩阵键盘（查表法） （C51环境）-4* 4 matrix keyboard (look-up table) (C51 environment)

2个F040之间的CAN通讯，可以远程帧收发，c语言-2 of the CAN communication between the F040, you can send and receive remote frames, c language

本单片机开发例程含有电路图及C语言，有一定的参考价值-Containing the single-chip circuitry to develop routines and C language, the value of some reference

pic 单片机红外接收分析仪的资料，印制板部分，pdf文件格式，请参考使用-pic microcontroller infrared analyzer to receive the information, PCB, pdf format, please refer to the use of

用ATMega单片机做的跑马灯的程序代码-MCU to do with the ATMega Marquee program code

51单片机“心形”音乐电子贺卡源码，挺好使，可做成品生产-51 Single-chip

计时器检测要接计时器要用keil生成hex再用-Detection timer use the timer to take keil generate hex reuse