4X4键盘密码比较模块，可以查看密码6

在图像中

MAX+plus II编译的模30加法计数器，简单的与非门组成！-MAX+ Plus II compiler module adder 30 counters, a simple composition with the non-door!

说明：  采用FPGA（现场可编程门序列）编写VHDL语言设计多路同步脉冲发生器，对信号进行分频处理，实现四路信号相位相差T/16和T/8的延迟相位输出，实现的四路脉冲与传统的脉冲同步器不同，它具有高集成度，高通用性，容易调整和高可靠性等特点。(Using FPGA (field programmable gate sequence) to write VHDL language to design multi-channel synchronous pulse generator, to divide the frequency of the signal, to achieve the four-way signal phase difference T / 16 and T / 8 delay phase output, the realization of the four-way pulse is different from the traditional pulse synchronizer, it has the characteristics of high integration, high-throughput, easy adjustment and high reliability.)

MATLAB辅助设计数字滤波器源代码，QUATUS II 实现！(MATLAB-aided design of digital filter source code, QUATUS II implementation!)

xilinx CTC IPcore 误码率测试-xilinx CTC IPcore Bit Error Rate Test

本代码主要功能是PPM解码，采用Verilog语言，通过移位寄存器和组合电路实现解码。(The main function of this code is PPM decoding.)

ENDAT 协议说明，包括时序等详细的说明，(endat Encoder characteristics)

ALTERA发布的内部FIFO读写示例，很有参考价值，对初学者会有一定的帮助(ALTERA' s internal FIFO read and write examples of great reference value, there will be some help for beginners)

四人抢答器，已通过编译，仿真，包括抢答识别、计分、计时、数字显示等功能。-Four Responder, has passed the compilation, simulation, including the answer in his identification, scoring, timing and digital display.

使用FPGA实现三相直流无刷电机换相，该程序可以使用(Use FPGA to realize the three-phase brushless DC motor commutation, the program can use)