NNAD_Flash

说明：  51at89s52单片机，查询法和中断法的串口通信，计算机向单片机发数据；计算机与单片机双向通信！！！！！！！！(51at89s52 microcontroller, query and interrupt method of serial communication, the computer sends the data to the single chip microcomputer communication between computer and single chip microcomputer!!!!!!!!)

基于stm32开发的频率检测及液晶显示，在显示时的测量范围为50hz到100khz。误差为<=1%。(Frequency detection and liquid crystal display based on stm32)

单片机程序调试黑宝书，很好的书籍，适合入门。(Single-chip computer program debugging black book, a good book.)

此代码为stm32将外部flash如w25q32模拟成U盘，对内部数据进行读写操作，此工程已经验证通过，希望对大家用一定的帮助(This code is stm32, which simulates external flash such as w25q32 into a U disk to read and write internal data. This project has been verified and passed. I hope it will be of some help to you)

说明：  单片机与ht7038 demo，三相电能表，电量数据包括电流电压功能，采用免校准方法(MCU and ht7038 demo)

stm32主控芯片实现对T5557卡的读写，资料包括读卡电路，T5557卡片的相关技术文档，上位机及工程源码。(The main control chip of STM32 realizes the reading and writing of T5557 card, including the reading circuit, the related technical documents of T5557 card, the host computer and the engineering source code.)

说明：  stm32f10x官方纯净固件库，官网下载速度过慢，特此提供(Stm32f10x official pure firmware library, official website download speed is too slow, is hereby provided)

根据两路模拟电压信号控制输出电压模拟信号(According to the two analog voltage signal control the output voltage analog signal)

zhigongcankao,zijixiede,hualehenchangshijian

C8051F120和C8051F130的基础例程源码，学习该系列单片机的号资料(C8051F120 and C8051F130 source based routine, learning the number of the MCU data)