锁相环设计及 fpga 实现

通过PC串口调试助手向MINI板发数据（HEX），在数码管显示接收到的数据，并回传给PC(The debugging assistant sends data (HEX) to MINI board through PC serial port, displays the received data in the digital tube and sends it back to PC)

51数字钟带各种扩展年，月，日等并且可预置。用汇编语言写的(51 digital clock with extended assembly language)

说明：  基于fpga的ad采样程序 可控制ad9226对信号进行采样(Ad9226 signal sampling can be controlled by ad9226 sampling program based on FPGA)

Altera DE0-Nano 开发平台SOPC可编程片上系统实现官方Demo。(Altera DE0-Nano development platform the SOPC programmable on-chip system Official Demo.)

说明：  系统介绍了数字开发系统平台FPGA设计中的部分技巧 对于FPGA开发研究人员具有一定的指导和帮助意义(Systematic introduction of digital development platform FPGA design techniques for FPGA development of some of the researchers have some sense of guidance and help)

很好的NAND Flash 硬件驱动语言，支持VHDL和verilog 语言方便移植，如果有想用FPGA直接驱动NAND flash而又不知如何下手的朋友肯定喜欢。(NAND Flash Controller Reference This reference design is used to interface a NAND Flash device and provides a simple host end interface. The host end interface of this design is user-configurable. It provides buffer select signal, buffer write enable signal, address bus, data bus, error status signal, control and handshake signals for the user......)

9针的rs232与fpga之间的串口通信源程序(Rs232 9 pin serial communication with the source between fpga)

基于QuartusII环境下的地铁自动售票系统(Subway auto ticketing system based on QuartusII)

说明：  我自己当初用来求解arctan 暂时没有搞成ip形式 搞好了还要传git 这个代码还没有搞好，因为急需要下载东西 如果感兴趣可以联系我 邮件(this is a not full wrappered code very crude use chebyshev to caculate arctan function i m urgent to download a model from pudn so i do this.)

数字自动增益控制 AGC （automatic gain control） Verilog(automatic gain control Verilog)