A33芯片资料

基于STM32F407实现人脸识别和指纹识别的考勤系统硬件设计。(Hardware Design of Time and Attendance System Based on STM32F407 for Face Recognition and Fingerprint Identification.)

FPGA和STM32F103的多轴控制硬件设计，包含原理图，PCB(FPGA and STM32F103 multi-axis control hardware design, including schematics, PCB)

一本关于有源滤波器快速设计的书，可以方便找到并实现自己需要的波形(A book about the fast design of the active filter can easily find and realize the waveform that you need.)

EM78P451 SPI官方使用程序，内涵主机模式、从机模式已经.INC头文件。(EM78P451 SPI The official use program, the connotations of the host mode, the slave mode has.INC header file.)

说明：  基于51/52单片机 1，探测环境温度，以LCD1602 做显示单元 2，可设置上限/下限数值，从而做到警报的提醒及应急设施的启动 3，超过设置限值时，会启动 LED 、蜂鸣器以及电机（仿真时使用）应用可使用其他代替(Based on 51 / 52 single chip microcomputer 1. Detect the ambient temperature with LCD1602 as the display unit 2. The upper / lower limit value can be set to remind the alarm and start the emergency facilities 3. When the setting limit is exceeded, the LED, buzzer and motor (used in simulation) application will be started, and other alternatives can be used)

一个高性能麦克风电路设计，电路具有高保真润色好等等特点(A High Performance Microphone Circuit Design)

说明：  高频感应加热设备电器原理图 Protel99格式 PDF格式 高频感应加热设备电器原理图(Electrical schematic diagram of high frequency induction heating equipment)

说明：  电解电容工程笔记(Aluminum capacitor note)

说明：  基于单片机的电阻、电容、电感测试仪 可测电容，电感，电阻等元器件的值(Resistance, Capacitance and Inductance Tester Based on Single Chip Microcomputer)

基于51单片机的简易电子时钟，能实现校时。(Electronic clock, can achieve timing.)