Fundamentals-of-Power-System-Economics

51单片机dac0809驱动程序，包含整个单片机开发。(51 single dac0809 drivers)

单片机模拟UART,实现软件模拟串口，C语言编写(Single-chip analog UART, software simulation serial, C language)

51单片机AT89C52串行通信.上位机通过串口向单片机发数据，单片机接收后发回给上位机。(51 AT89C52 single-chip serial communication. PC send data through the serial port to the microcontroller, the microcontroller has sent back to the host computer.)

本设计是以单片机为控制核心，通过液晶实时显示时钟，并通过LM35D传感器测量温度，将温度值实时显示在液晶上。(The design is based on microcontroller core, real-time via the LCD display clock, and through LM35D sensors measure temperature, the temperature values ​ ​ displayed in real time on the LCD.)

stm32f103读写AT24C256的C语言程序(stm32f103 read and write the AT24C256 C-language program)

Very useful description of FAT system

Programing led s behaviour in STM32F4Discovery board

基于51单片机的直流电机电压控制的PID控制算法(The control algorithm of 51 single chip microcomputer DC motor voltage control based on PID。)

stm32输出四路pwm，能完成占空比可调，频率可变化的pwm(Stm32 four road PWM output, can finish the duty ratio is adjustable, can change the PWM frequency)

说明：  可生成正交DDS信号，基础程序，STM32f103(Generating orthogonal DDS signals)