4X4键盘密码比较模块，可以查看密码6

FPGA通过SPI总线配置AD采集芯片AD9648的程序，Verilog实现 (FPGA configuration via SPI bus chip AD9648 AD acquisition procedures, Verilog realization)

EDA应用中RAM具体定义实例，供大家学习和写程序参考之用-EDA applications, examples of the specific definition of RAM, for everyone to learn and write programs for reference

实验用16位全加器的VHDL代码，适合初学者学习，数电学习的好工具。 (Experiment with 16-bit full adder VHDL code for beginners to learn, a good tool to learn a few power.)

ISE环境下Verilog编程实现机械按键去抖(ISE Verilog programming environment under mechanical debounces)

LOW pass FIR filter for multirate processing

这是用verilog语言实现的1024点ff程序t-This is achieved using Verilog 1024 language ff procedures point t

I2C温度传感器ADT75的控制源码 使用verilog 状态机实现 易入门-I2C for ADT75 temperature sensor

说明：  直接数字式频率合成器DDS设计、Verilog。 产生的信号可以是正弦波或方波、三角波、锯齿波等，自选。 采用DDS技术，将所需生成的波形写入ROM中，按照相位累加原理合成任意波形。 此方案得到的波形稳定，精度高，产生波形频率范围大，容易产生高频。 本实验在设计的模块中，包含以下功能： （1）通过 freq 信号输入需要的频率的值； （2）通过 wave_sel 信号选择所需的波形； （3）通过 amp_adj 信号选择波形放大的倍数。(DDS design of direct digital frequency synthesizer, Verilog. The generated signal can be sinusoidal or square wave, triangular wave, sawtooth wave and so on, optional. By using DDS technology, the required waveforms are written into ROM, and arbitrary waveforms are synthesized according to the principle of phase accumulation. The waveform obtained by this scheme is stable, accurate and easy to generate high frequency waveform. This experiment includes the following functions in the designed module: (1) Input the required frequency value through freq signal; (2) Choosing the required waveform by wave_sel signal; (3) Select the multiplier of waveform amplification by amp_adj signal.)

An odd parity checker as an FSM using VHDL

FPGA用于实现crc16编码的verlog源程序，用到的请下载。(FPGA is used to achieve the the crc16 the encoding of verlog source code used to download.)