lecg_局部增强的时钟门控

vhdl语言，国外教材，数字信号处理算法(vhdl language, foreign materials, digital signal processing algorithms)

4*4键盘小程序 两种算法内附检查LED(4* 4 keyboard applet containing two algorithms check the LED)

用窗函数法设计一个线性相位FIR数字低通滤波器，用理想低通滤波器作为逼近滤波器，通带截止频率为0.2 ，阻带截止频率为0.4 ，阻带衰减不小于-40dB。(Window function method to design a linear phase FIR digital low-pass filter, as an ideal low-pass filter for approximation filter passband cutoff frequency of 0.2 stopband cutoff frequency of 0.4, the stop-band attenuation of less than-40dB.)

LED灯、跑马灯的显示源程序，包括对代码的说明(Display source code LED lights, marquees, including the code specification)

OFDM中的IFFF模块实现，基于verilog实现，通过验证(OFDM module in IFFF)

sd_sdram_lcd 是读取SD卡中的数据，然后通过LCD显示(It is to read the data in SD card and display it by LCD)

说明：  verilog编写的RS485读写驱动程序(RS485 read-write driver written by Verilog)

串口代码，FPGA实现，可以直接给出结果，可以仿真并实现

UART包括发射机和接收机。发送器本质上是一个加载数据的特殊移位寄存器；

Basic VHDL code to create a sine wave generator for an FPGA board.