refregeration

输入一个数字，数码管可倒计时显示数字，显示到0后又重新显示(Enter a number, digital countdown display digital display to 0 and then redisplay)

51单片机的一些例程，包括led、数码管、点阵、sd等等(51 examples)

125k t5557卡 读写(keil C51 T5557 READER)

ADS850516位AD的驱动程序,采用8位单片机控制,C语言编写(ADS850516 bit AD driver, using 8-bit single-chip control, C language)

说明：  实现避障的基础功能，使用stm32f103rct6板子(this is very good idea!)

说明：  安富莱modbus教程，源码讲解，希望能够帮到大家。(Anfulai modbus tutorial, source code explanation, hope to help you.)

STM32F103RBT6和W5200网络芯片的服务期端的测试程序，减少了很多不必要的设置，测试更方便(W5200 STM32F103RBT6 and end of service network chip testing procedures, to reduce a lot of unnecessary settings, the test is more convenient)

基于stm32USB模拟鼠标移动，演示用键盘的S1,S2,S3,S4模拟鼠标的上下左右移动。(Based on stm32, USB mouse, demonstration of the keyboard S1, S2, S3, S4 simulated mouse from top to bottom and move around.)

介绍了一种家居安防系统的硬件电路。采用门磁、热释红外、主动红外、振动、可燃性气 体、烟雾等传感器及新型的安防集成电路， 由高性能收发组件完成外围信号的采集和传送。采用高性价比 的PIC单片机作为主控器件，工作稳定可靠。(Design of the Aptitude Safe--System Circuit in Home--Living Circumstance)

单片机spi简单实例代码,有一定的参考价值。分享给大家(SCM SPI simple example code, there is a certain reference value. Share it with you.)