ComputerSetTimePowerOff

说明：  基于STM32f407ZGT6编写的4*4矩阵键盘程序，并通过TFT显示屏显示(4*4 Matrix Keyboard Program Based on STM32f407ZGT6 and Displayed by TFT Display Screen)

只有音频采集模块的软硬件，不包括主控制板部分，软件编程使用的Keil软件，有相应的注释，便于学习。(Only the hardware and software of the audio acquisition module, excluding the main control board, are included. Keil software is used in software programming. It has corresponding annotations for easy learning.)

说明：  ht47r20遥控程序，红外线载波输出频率这系统时钟的12分频，当系统频率为480KHZ，载波频率为40KHZ(ht47r20 remote control procedures, infrared output carrier frequency system clock frequency of 12 minutes, when the system frequency for 480KHZ, carrier frequency 40KHZ)

STM32对讲机VS1053和2401。使用STM32做的对讲机，用VS1053做语音的编码和解码，用NRF24L01做通信。带有详细代码。(STM32 walkie-talkie VS1053 and 2401. Use STM32 as walkie-talkie, VS1053 as voice coding and decoding, NRF24L01 as communication. With detailed code.)

avr ATmega16 单片机PWM实验TC0-PWM2AVR T/C0相位修正PWM模式范例(avr pwm ATmega16 )

三相交错式DC/DC的BOOSR电路，适合初学者学习(Phase Interleaved DC/DC circuit of BOOSR, suitable for beginners to learn)

STM32通过SPI通信控制ADC采集脑电、眼电、心电数据，并将得到的数据通过串口与蓝牙通信后将其发送至PC端进行处理(STM32 collects the data of EEG, eye and ECG through the SPI communication control ADC, and sends the obtained data to the PC side after communication through the serial port.)

测量频率的低电平保持时间，用来测量汽车喷油嘴喷油的时间，单位ms(The low level holding time of measuring frequency is used to measure the injection time of automobile nozzle, unit Ms.)

说明：  控制器局域网总线（CAN，Controller Area Network）是一种用于实时应用的串行通讯协议总线，它可以使用双绞线来传输信号，是世界上应用最广泛的现场总线之一。CAN协议用于汽车中各种不同元件之间的通信，以此取代昂贵而笨重的配电线束。该协议的健壮性使其用途延伸到其他自动化和工业应用。CAN协议的特性包括完整性的串行数据通讯、提供实时支持、传输速率高达1Mb/s、同时具有11位的寻址以及检错能力。(Controller area network bus (CAN Controller, Area Network) is a serial communication protocol for real-time application of the bus, it can use a twisted pair to transmit the signal, is the world's one of the most widely used field bus. The CAN protocol is used to communicate between different components of an automobile to replace the expensive and bulky wiring harness. The robustness of the protocol extends its use to other automation and industrial applications. The characteristics of CAN protocol include serial data communication, integrity to provide real-time support, the transmission rate of up to 1Mb/s, also has 11 bit addressing and error detection capability.)

二极管钳位三电平变频器中点电压平衡相关问题研究(Diode clamped three level inverter voltage balance related problem research)