685d

本文介绍一种利用单片机本身所提供的串行通讯口，采用自定义串行通信协议，加上总线驱动器如MAX481、MAX483、MAX485、MAX487等组合成简单的RS－485通讯网络，完成单片机间的多机通讯。(This article describes a serial communication port provided by the microcontroller itself, the custom serial communication protocols, coupled with the bus driver, such as the MAX481, MAX483, MAX485, MAX487, combined into a simple RS-485 communication network, complete single-chip between themulti-machine communication. )

此设计模拟工业控制现场，通过调节Labview界面中的模拟仪表，通过RS232串口通信，把转速控制信息通过串口传送到单片机中，进而利用单片机控制电动机的转速。(labview-based PWM motor speed)

在stm32上可以点亮流水灯,可以帮助你对stm32的固件库和外设有所了解(it could run on the stm32)

一个自制的小闹钟程序，程序可以配置，能够切换背景以及时间显示的外观，两者可以单独变换也可以一起变换。(A self-made small alarm clock program, the program can be configured, can switch the time display background and appearance, the two can be alone together can also transform transformation.)

国外PLC设计的原理图和PCB(Principle foreign PLC design and PCB)

说明：  尽管模拟高频头在开发中用得已经减少了，但是模拟电视接收功能在许多数码产品上仍有其身影。希望对本站的朋友有所帮组！(Although the analog tuner in the development of using has been reduced, but the analog TV reception capabilities in a number of digital products still has its shadow. Want to site a friend had to help group!)

辅助数字电路课程学习，说明TTL电路中驱动电流之间的 关系。 (auxiliary digital circuit courses on TTL circuit-drive current relationship.)

一个可以控制电机的程序 能主管的显示数据(One can control the electric charge of the program can display data)

编程菜鸟学习用的蜂鸣器播放八月桂花香声音(Programming rookie learning the buzzer with sound playback 八月桂花香)

交通灯数码管显示4*4键盘修改时间~带仿真图和源代码 模块化编写(Traffic lights digital display 4* 4 keypad to change the time ~ with simulation diagram and source code modular writing)