PVD

说明：  pic控制的led灯的循环点亮模式，八个LED，高电平点亮，可用于I/O口及其它信号状态的观测。(pic control led cycle lights lit mode, eight LED, high light, can be used for I/O signal state of the mouth and other observations.)

说明：  基于51单片机对水温进行PID控制，维持水温，水温可设定。内附Verilog代码PCB和仿真程序。(Based on 51 single-chip computer, the water temperature is controlled by PID to maintain the water temperature, and the water temperature can be set.)

基于STC单片机系列开发，本源码基于STC15W4K56S4开发，IIC控制实时时钟芯片DS3231,开发者可通过更改IIC控制引脚定义，可直接用于不同种类的单片机，直接调用函数即可实现时间设置及时间读取，以及相关配置。(STC microcontroller family based on the development, the source STC15W4K56S4 based development, IIC control the real-time clock chip DS3231, developers can change the IIC control pin definitions, can be directly used for different types of single-chip, direct call function can be realized time setting and the time to read take, and related configurations.)

讲解单片机精确延时的思路，采用C51高级语言编写(Explain the the microcontroller precise delay ideas C51 high-level language)

按下按键，产生中断请求，同时LED灯翻转，计数器加1(Press the button to generate interruption request, while the LED lamp flips, counter plus 1)

RC522 SPI接口的51单片机程序例程(RC522 SPI)

基于NXP LPC2478的uCGUI例程，实现LCD和SDRAM的测试(uCGUI based on NXP LPC2478，include LCD and SDRAM test)

51单片机简单小程序，用keil软件编写，实现数码管的循环移动(51 single simple small program, keil software development, mobile digital tube to achieve the cycle)

字符串转十六进制，让你的数据更符合你的要求。(Turn hex string to make your data more in line with your request.)

实现0.91寸，IIC OLED屏幕驱动程序(Implementation of 0.91 inch, IIC OLED screen driver)