Verilog HDL系列和转换的准备。我用电流输出类型。股份有限公司...

说明：  设计一简易数字频率计，其基本要求是： 1)测量频率范围0～999999Hz； 2)最大读数999999HZ,闸门信号的采样时间为1s；. 3)被测信号可以是正弦波、三角波和方波； 4)显示方式为6位十进制数显示； 5）具有超过量程报警功能。 5)输入信号最大幅值可扩展。 6）测量误差小于+-0.1%。 7)完成全部设计后，可使用EWB进行仿真，检测试验设计电路的正确性。(The basic requirements of designing a simple digital frequency meter are: 1) The measuring frequency range is 0-999999 Hz. 2) The maximum reading is 999999HZ, and the sampling time of gate signal is 1 s. 3) The measured signal can be sine wave, triangle wave and square wave. 4) The display mode is 6-bit decimal number display. 5) It has alarm function beyond range. 5) The maximum amplitude of input signal can be expanded. 6) The measurement error is less than +0.1%. 7) After completing all the design, EWB can be used to simulate and test the correctness of the circuit.)

Leonardo综合器用STDL80 0.5um综合库，安装见说明，找到它真不容易。(STDL80 0.5um ASIC Library for Leonardo)

Xilinx Spartan-3E Starter Kit Board User Guide(中文用户手册)(Xilinx Spartan-3E Starter Kit Board User Guide)

此是进行循环冗余效验的Verilog编码，适合多种标准，如CRC16(this Cyclic Redundancy is well-tested Verilog code for a variety of criteria, such as CYXLIC REDUNDANCY)

Based on SVPWM three-level inverter matlab simulation, It describes the application of load forecasting, EULER numerical analysis method.

运用matlab实现fft变换，用于地震资料频谱分析！(FFT transform)

为了便于计算结果在FPGA中后续的计算和ip核中的调用，本代码输入信号为普通浮点型数据，输出为32位表示的浮点型数据。

MD5 算法在Xilinx FPGA上的实现，希望对大家有用。(MD5 algorithm in Xilinx FPGA Implementation, in the hope that useful to everyone.)

Program to implement convolution of two signals.

Top module name : SHIFTER (File name : SHIFTER.v) 2. Input pins: SHIFT [3:0], IN [15:0], SIGN, RIGHT. 3. Output pins: OUT [15:0]. 4. Input signals generated from test pattern are latched in one cycle and are synchronized at clock rising edge. 5. The SHIFT signal describes the shift number. The shift range is 0 to 15. 6. When the signal RIGHT is high, it shifts input data to right. On the other hand, it shifts input data to left. 7. When the signal SIGN is high, the input data is a signed number and it shifts with sign extension. However, the input data is an unsigned number if the signal SIGN is low. 8. You can only use following gates in Table I and need to include the delay information (Tplh, Tphl) in your design.