按键控制的状态机代码

8051IP 核源代码（VHDL）.RAR-8051IP nuclear source code (VHDL). RAR

数控机床 多轴插补原理积分算法，实现s曲线加减速原理(Numerical control machine tool multi axis interpolation principle, integration algorithm, to achieve the S curve acceleration and deceleration principle)

说明：  详细介绍了如何使用ModelSim进行仿真.(it will teach you how to use the ModelSim to simulink.)

verilog HDL编写的浮点除法器，编译通过，可综合。压缩包包含三个文件。(verilog HDL write floating-point divider, compile, can be integrated. Archive contains three files.)

-- WISHBONE revB2 compiant I2C master core -- -- author: Richard Herveille -- rev. 0.1 based on simple_i2c -- rev. 0.2 april 27th 2001, fixed incomplete sensitivity list on assign_dato process (thanks to Matt Oseman) -- rev. 0.3 may 4th 2001, fixed typo rev.0.2 txt -> txr -- rev. 0.4 may 8th, added some remarks, fixed some sensitivity list issues--- WISHBONE revB2 compiant I2C master core---- author : Richard Herveille-- rev. 0.1 based on simple_i 2c-- rev. 0.2 adolescence 27th 2001, fixed incomplete sensitivity list on assign_d ato process (thanks to Matt Oseman)-- rev. 0.3 m ay 4th 2001, fixed typo rev.0.2 txt-

这是一个很实用的，很实用的，关于软件的使用，大家可以来看看。-This is a very practical, very practical, with regard to the use of software, everyone can come and see.

说明：  1、能正确显示输入信号频率； 2、测量频率范围为1Hz ~ 999999Hz； 3、测量结果以十进制数字显示； 4、能测量幅值较小的信号频率； 5、有自动刷新输出数据的功能（如5s刷新一次）； 6、有自检模块（如产生100Hz的校准方波）；(1. It can correctly display the input signal frequency; 2. The frequency range of measurement is 1Hz ~ 99999hz; 3. The measurement results are displayed in decimal; 4. It can measure signal frequency with small amplitude; 5. It has the function of automatically refreshing the output data (e.g. once in 5S); 6. Self checking module (such as generating 100Hz calibration square wave);)

2FSK的matlab仿真，叠加了高斯白噪声(2FSK matlab simulation, superimposed on a Gaussian white noise)

spi通用串行总线，4线控制，可读写操作(SPI universal serial bus, 4-wire control, readable and writable operation)