4x4 KEYPAD median counter input, input their own definition of the median

simple code based on verilog shifter , cla ,clg

vhdl数字电路设计经典教程，入门必备，非扫描版，非常清晰(vhdl digital circuit design classic handbook, entry-essential, non-scan version, very clear)

我用的是二进制分频的方法，这种分频方法的分频只能是2n次方，有限制，但是很方便

ASK,FSK,PSK,DPSK调制解调的详细仿真代码(ASK, FSK, PSK, DPSK modulation and demodulation detailed simulation code)

里面含有vhdl和verilog 版本,很好用!dct变换用得很多啊!(Which contains a VHDL and Verilog versions of very good use! Dct transform with a lot ah!)

VHDL Design of BCD to 7-segment decoder using PROM

关于USB开发的verilog开发程序，非常的全面，学习FPGA开发时用得着。(About USB development verilog development process, very comprehensive, learning FPGA development time worthwhile.)

FPGA的学习指南，绝对经典，内容比较超值，我已经细心读过了，讲解清晰，快速入门。-FPGA-study guide, an absolute classic, the content of more value, I have carefully read, and to explain clearly, Getting Started.

有自己制作的下载器原理图，包含了stlinkv2,XDS100V3,USBBLASTER.原理图和封装，一款多功能下载器。(Have their own production downloader schematic diagram, contains stlinkv2, XDS100V3, USBBLASTER. Schematic diagram and encapsulation, a multi-function downloader.)

基于fpga的verilog实现ad及uart，并进行仿真验证(Verilog based on FPGA implements AD and uart, and carries out simulation verification)