Simple I2C controller

这是一个基于可编程逻辑器件的程序，用来实现自动转换量程频率计控制器，该程序在可以再仿真器上仿真实现-This is a programmable logic device based on the procedures used to automatically convert the frequency range of the controller, the program can be in the simulation simulator

8对于输入密码锁的键，假设重置后七个灯显示" 0"，并且使用sw1、sw2、sw3 3，只需按任意sw1、sw2、sw3，将使七个灯显示值相加" 1

液晶ST7565P_12864驱动，实现打点成图。(LCD ST7565P_12864 drive, dot mapping.)

自己使用VHDL语言编写的24位寄存器.主要用于DDS中-24bit_register

说明：  用MATLAB设计及FPGA实现IIR滤波器的方法 摘要 本文介绍了IIR数字滤波器的传统设计思想与步骤及计算机辅助设计方法。并在FPGA上高效实现的低阶IIR滤波 器，其阶数低，实时响应快，适合雷达等的实时、高效处理环境。利用IIR滤波器的多相结构来实现该滤波器系统的方法，对于 四通道的情形在MATLAB上利用Simulink作了仿真, 并在目标板上对算法进行了实现,证明该系统能够同时处理四个通道的信号。(Using MATLAB Design and FPGA realization IIR Filter method Abstract This paper introduces IIR digital filter traditional design Thought and steps and CAD method. And FPGA on efficient realization low IIR filter, its order low, real response fast suitable radar real time, efficient processing environment. Use IIR filter multiphase structure realize the filter systematic method, for four channel circumstances in MATLAB on use Simulink made simulation and target board algorithm was realized proved system can simultaneously four channel signal.)

这是利用VHDL编写的一个CRC32的代码，文档只有代码，具体原理请参考其他文献-This is the use of VHDL prepared a CRC32-code, the document is only a code Please refer to specific tenets of other literature

Very good info. for RS-232 echo VHDL code .

用VHDL语言实现的蜂鸣器发声程序，当按下不同按键时，发出不同频率的声音(Function:when different buttens are pressed, beep will play sound with different frequency. laguage:VHDL)

Verilog reference book

sigmoid函数硬件实现，verilog代码及其测试用例(Sigmoid function hardware implementation, verilog code and test cases)