QPSK调制的载波频偏估计，是一个可以调用的函数。接收端进行了一系列的处理。经典的Fitz法(QPSK-carrier frequence offset estimation_ Fitz)

利用平方环法提取同步载波的FPGA实现的仿真(FPGA implementation of synchronous carrier extraction using square loop method)

vhdl的基础性的介绍，对初学者大有用处-vhdl basic introduction

基于FPGA的PWM控制器设计，包含ADC0820模块，按键扫描，PID，PWM控制器等模块，VHDL语言完成，已仿真通过(PWM controller design based on FPGA, including ADC0820 module, key scan, PID, PWM controllers and other modules, VHDL language completed, through simulation)

Hynix公司8M byte sdr sdram的verilog语言仿真实现。-Hynix company 8M byte sdr sdram realize the Verilog simulation language.

VGA显示彩条DE2_70开发板 验证过的(VGA display color bar DE2_70 development board validated)

vhdl描述的显示代码 maxplus2开发环境-VHDL description of the display code development environment maxplus2

quartusII的环境下的基于Ep3C10144的KeyBoard程序-quartesII of the environment based on the KeyBoard program Ep3C10144

verilog coding for butterworth filter with cut off frequency with 500hz

Crossroad traffic lights with visualization in tcl/tk and verilog code