Using VHDL realize CPLD (EMP240T100C5) of the PWM output

：采用FPGA来实现一个基于OFDM技术的通信系统中的基带数据处理部分，即调制解调器。其中发射部分的调制器包括：信道编码（Reed-Solomon编码），交织，星座映射，FFT和插入循环前缀等模块。我另外制作了相应的解调器，可以实现上述功能的逆变换。(: Using FPGA to implement a technology-based OFDM communication systems in base-band data processing part of the modem. One part of the modulator launch include: channel coding (Reed-Solomon coding), interleaving, constellation mapping, FFT and cyclic prefix insertion modules. I also produced a corresponding demodulator can achieve the above-mentioned inverse transform function.)

设计含异步清零和同步时钟使能的加法计数器-Clear design with asynchronous and synchronous clock so that the adder counter

基于对ROM的编写，在quartusII上实现九九乘法器的实现，在试验箱的四个数码管上分别显示乘数，被乘数，积

基于DE2-70开发板的VGA接口实现程序，可在VGA屏幕上显示800*600分辨率的图像，刷新频率60Hz

说明：  adc采集多路采集多通道基于dma的adc采集(ADC acquisition, multi-channel acquisition and multi-channel acquisition)

用于视频运动图像编码的HUFFMAN编码，可广泛运用于MPEG-Moving Picture for video coding Huffman coding, can be widely applied to MPEG

篮球24s计时。计时器递减计数到零时，数码显示器显示‘0’并停止，同时发出报警信号(basketball 24 seconds)

Watch Dog Counter reset the output when the given timing meets.

用VHDL语言写了个FLAPPY_BIRD的程序，利用板子与屏幕可以运行游戏(VHDL language to write a program FLAPPY_BIRD by the board and the screen can run the game)

用VHDL语言写的VGA 控制程序，已经验证过，绝对好用！-VHDL language used to write the VGA control procedures have been verified, the absolute ease of use!