serial port simulated programme of lattice

一个精确的到0.01s的时钟源程序，对于初学VHDL理解很有帮助，只给了源程序没有给出仿真波形-An accurate clock source to the 0.01s for the beginner to understand VHDL helpful not only to the simulation waveform of the source

ARM7系统IP核的VHDL语言源代码，需要的开发环境是QUARTUS II 6.0。(ARM7 System IP Core VHDL language source code, the need for the development environment is QUARTUS II 6.0.)

该源码为VHDL语言编写的分频器，在W-4b教学平台上通过验证-The VHDL source for the prescaler languages, W-4b in the teaching platform validated

An FSM using VHDL and Johnson state encoding for states

说明：  basys3的数字钟，可以显示00.00-59.59(Digital clock of basys3,It can display 00.00-59.59)

电子秒表，FPGA实现,本科某课程设计，程序注释非常详细，(FPGA TIME-COUNTING)

说明：  DDS的基本原理主要由五部分组成，分别是；相位累加器，正弦波形存储器，数模转换器，低通滤波器和时钟，将相位累加器输出的数据作为地址，用来查询表的数据，将取出的正弦数据通过数模转换器输出模拟信号，模拟信号再通过一个低通滤波器输出纯净的正弦波信号。(The basic principle of DDS is mainly composed of five parts: phase accumulator, sinusoidal waveform memory, digital to analog converter, low-pass filter and clock. The output data of phase accumulator is used as address to query the data of table. The extracted sinusoidal data is output analog signal through digital analog converter, and the analog signal is output pure sine through a low-pass filter Wave signal.)

使用CPLD进行驱动电机演示，使用硬件编程语言，适合初学者-use of motor-driven CPLD for a demonstration of the use of hardware programming language, suitable for beginners

说明：  adrv9009的测试平台的测试脚本，适合新人参考(Adrv9009 test platform test script, suitable for new reference)

说明：  基于旋转编码器和LED灯组的强度调节系统设计(Design of Intensity Regulation System Based on Rotary Encoder and LED Lamp Set)