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这段代码包括了基于STM32对简单小车的循迹壁障以及L298N的驱动。并对其中关键部分进行了注释。(This code includes a simple car-based STM32 tracking barrier and L298N driver. And one of the key parts of the notes.)

国内专业手机生产厂商PCBA验收检验标准！！！(Professional mobile phone manufacturer PCBA test)

电子万年历设计，有程序和电路图，已经经过调试成功，希望对需要的人们，提供这一资料(Electronic calendar design, there are programs and schematics, has been successful commissioning hope that people need to provide this information)

IC卡读写器软件DEMO，支持ISO14443A、ISO14443B、ISO15693协议， ISO14443A：NTAG203、NTAG210、NTAG212、NTAG213、NTAG215、NTAG216, Ultralight、Ultralight C,MIFARE Classic 1K/4K, Mifare DESFire, MIFARE ProX, FM11RF08、FM11RF32, FM1208、FM1216 ,符合ISO14443A标准的CPU卡. ISO14443B：AT88RF020, SR176、SRI512、SRT512、SRI2K、SRI4K, SGIDC(只读UID),符合ISO14443B标准的CPU卡. ISO15693： I.CODE SLI, Tag-it HI-I Plus, 符合ISO15693标准的卡.(IC Card Reader Writer DEMO，support ISO14443A、ISO14443B、ISO15693 ， ISO14443A：NTAG203、NTAG210、NTAG212、NTAG213、NTAG215、NTAG216, Ultralight、Ultralight C,MIFARE Classic 1K/4K, Mifare DESFire, MIFARE ProX, FM11RF08、FM11RF32, FM1208、FM1216 . ISO14443B：AT88RF020, SR176、SRI512、SRT512、SRI2K、SRI4K, SGIDC. ISO15693： I.CODE SLI, Tag-it HI-I Plus.)

一个以太网帧解析程序，实现以下功能：解析已封装好的Ethernet V2.0帧封装文件（见附件），判断有多少个帧，每个帧的所有字段内容，检测CRC校验是否正确(An Ethernet frame analysis program, the following functions: parsing the encapsulated Ethernet V2.0 frame encapsulation (see annex), to determine the number of frames, each frame contents all fields to detect CRC checksum is correct)

MQ-7烟雾模块 DHT11模块 430单片机驱动 数字量 非模拟量 1602显示(MQ-7 DHT11 430F149 1602)

面向51单片机的复杂流水灯实验的c语言程序(The complexity of water for 51 single-chip light experiment c language program)

ARM对MMC卡的编程文档，通过它可以学习ARM对MMC卡的编程(ARM right MMC card programming documentation, which can learn from the MMC card ARM Programming)

基于430的DC_DC变化，采用PID控制，调节PWM的输出占公比，从而反馈调节输出电压(Based on 430 DC_DC change, using PID control, adjust the PWM output accounted common ratio, thus regulating the output voltage feedback)

交通灯 电路程序 C++ 汇编 交通信号灯(the light travel)