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电路的连接图，程序都有注释，仿真平台protues，适合初学的人(The connection diagram of the circuit, the program has the annotation, the simulation platform Protues, suitable for the first student)

开关电源谐振LLC 闭环全桥仿真电路，经典(Switching power supply resonant LLC closed loop full bridge simulation circuit, classic)

说明：  很好的candence教程，含原理图PCB和例程，可以配合视频边学边做(Good candence tutorial, including schematic PCB and routines, can cooperate with video while learning to do)

说明：  使用multisim软件设计的直流稳压保护电路，具有交流信号转直流信号，还进行了限压保护，最后通过光耦隔离器件作为开关，进行后续器件的驱动(The DC voltage stabilizing protection circuit designed by Multisim software has AC signal to DC signal and voltage limiting protection. Finally, the optical coupling isolation device is used as the switch to drive the follow-up device)

DDR4原理图 PCB参考。 pdf版本原理图以及allegro PCB文件。(cadence ddr4 allegro pdf)

说明：  全志A33芯片资料，包括芯片手册，用户使用说明等等(Quanzhi A33 Chip Data)

SNDR用于ADC计算信号噪声比，仅供参考学习，~~~(SNDR for ADC signal to noise ration calculation, for ur ref,~~~~~)

说明：  ATSHA204A加密芯片详细使用方法！ 保护您的程序不被抄袭。(ATSHA204A encryption chip detailed use method! Protect your program from plagiarism.)

说明：  基于FPGA的任意波形发生器DDS,verilog编写，正常使用(Arbitrary waveform generator DDS based on FPGA)

对delta sigma进行设计，实现delta sigma ADC的设计(this is use for delta sigma adc ,and design and achieve adc)