verilog HDL语言编写的键盘扫描程序，考虑以确定关键的博…

基于状态图的光电编码器4倍频vhdl程序，输入相位差90度的两相，输出倍频和方向信号-Based on the state of the optical encoder Figure 4 multiplier vhdl procedure, enter a 90-degree phase difference of two-phase, frequency and direction of the output signal

these files are written in verilog but i am uploading in text format

基于Verilog HDL出租车计费系统的研制(Based on Verilog HDL Taxi Accounting System)

数字下变频（DDC）在如今基于软件无线电的架构中对系统的整体性能决定性的影响，代码为基于Matlab的4通道DDC程序，程序中可以根据需要调节滤波器等参数评估DDC的性能对于使用FPGA实现DDC有较大的参考价值(Digital down conversion (DDC) in today' s architecture based on software radio system a decisive impact on the overall performance of the code for the 4-channel DDC Matlab-based program, the program can be adjusted according to filter parameters such as the use of performance assessment FPGA DDC DDC has achieved great reference value)

基于xilinx spartan 3E开发板，通过旋转编码器实现流水灯的左右移动闪烁变换。(Based on the Xilinx Spartan 3E development board, the left and right flicker transformation of the flow lamp is realized by the rotary encoder.)

verlog hdl无刷电机控制程序,已在modelsim仿真-verlog hdl brushless motor control procedures have been in ModelSim Simulation

The code is used to interface PC monitor with Spartan 3E for the display. if you run the program on spartan 3 you would be able to see different test pattern on the monitor screen

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.)

一个8位的CPU设计，用verilog语言写的，希望有用(A CPU OF 8 BITS )

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