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DTMF demoludacion algoritm

说明：  天嵌2440，PWM测试程序，包括内核驱动程序，和测试程序(Days embedded 2440, PWM test procedures, including kernel drivers, and testing procedures)

说明：  完成zc706 下petalinux 系统移植，按照文章所述步骤，操作，笔者的可以起来。需要在zynq 7000 系列上跑linux系统的可以参考哈。(What the document describles is how to use the linux system on your zynq7000 board. If you reffer to the document , I could make sure that It's really helpful for you to run your system. good luck!)

嵌入式linux应用程序开发源程序,，包括第6,7,8,9，10章的源程序( embedded linux application development standard course Source)

自己编写的一个很小的bootloader程序，可以运行在s3c2440开发板上，启动linux内核(I have written a small bootloader program that can run on s3c2440 development board to start the linux kernel)

安防A、D芯片资料，很重要的文件，使用者广泛(Security A, D chip data, it is important documents)

实现无线遥控接收传感器的显示，能够精确实现无线遥控的精确接收，精确高效。(Realization of the wireless remote control receiving sensor display, can accurately realize wireless remote control receiving precision, accuracy and efficiency.)

一个用于商业POS机的内嵌程序,支持RFID和热敏打印,内附详细函数调用说明(A commercial POS machines for embedded programs, support for RFID and thermal printing, containing detailed description of the function call)

嵌入式C的基础知识以及精华部分，里面还涉及到一些操作实践。知识讲述得挺清楚的(The basics of embedded C, and the best part, which also involves some operating practices. Knowledge about quite clear.)

说明：  cs8900a驱动，基于linuk系统 (cs8900a driven system based on linuk)