１３键键盘的ＶＨＤＬ顶层文件，我是初学着，希望对初学者有用...

QFSK的调制与解调，用C写的主程序，汇编写的调制与解调的子程序(QFSK the modulation and demodulation, with the main program in C, compile writing, the modulation and demodulation of the Subprogram)

ofdm的verilog程序 利用ＦＰＧＡ实现-OFDM FPGA using the Verilog procedures realize

FIR带通、带阻滤波器设计，需要输入截止频率以及容许偏差。(FIR band pass and band stop filter design)

说明：  FPGA的fifo与dsp的emif接口测试程序(EMIF interface test program for FIFO and DSP of FPGA)

FIR filter up to 128x

高速ADC及DAC接口的参考设计。在Xilinx FPGA上实现。(Reference design of xapp1071.)

用vhdl编写的简易电子中设计，经过测试成功，且用记事本上载，无需阅读器进行阅读。-Use of VHDL in the preparation of simple electronic design, has been tested successfully, and use Notepad to upload without reader reading.

使用FPGA完成AGC 自动增益的代码，适合初学者(FPGA to complete the use of AGC automatic gain code, suitable for beginners)

伪随机序列FPGA 通过仿真 M3000(Pseudo-random sequence M3000 FPGA simulation)

此为数字逻辑书上的答案，应该很多同学都需要吧，关于数字逻辑(This is the answer books, digital logic, it should be a lot of students need it, on the digital logic)