单片机扩展是单片机应用的重要部分，文档主要介绍单片机的片外扩展。...

DIY多功能转换器（已调试通过）。 本原理图可以实现USB/RS232、USB/RS422、USB/RS485接口转换功能。只需安装USB驱动程序即可实现USB转串口的功能，简单方便。另外只需对电路图稍作改动即可实现RS232/RS422或RS232/RS485转换功能。 心动了吗？不如赶快行动，拥有属于自己的五合一的接口转换器吧！-DIY Multi-function Converter (has debug through). The schematic diagram can be achieved USB/RS232, USB/RS422, USB/RS485 interface conversion. Simply install the USB driver can achieve the function of USB to serial, easy and convenient. Also just to make a minor amendment to the circuit can be realized RS232/RS422 or RS232/RS485 conversion. Echocardiography it? Action as soon as possible, with their own-one interface converter吧!

8位定时器H1(PWM 输出) -8-bit timer H1 (PWM output)

DS18B20.rar 温度传感元件 stc89c51 12MHz 好东东希望你能喜欢！ -DS18B20.rar temperature sensor stc89c51 12MHz Dongdong good hope that you will like it!

ARM的计数器中断实验。是基于Keil For Arm的。-ARM interrupt counter experiments. Is based on the Keil For Arm.

串行接收、提取GPS报文信息，存于单片机内存单元。-this is resouse of gps reciever.

传感器应用实例电路设计150例，资源共享，敬请使用！-Sensor circuit design application 150 cases, resource sharing, please use!

pic16f877a使用iic总线方式驱动低价温度芯片tc74，并液晶显示的一个程序，板上验证通过，可以直接使用，令附tc74中文资料-PIC16F877A using the IIC bus driven low temperature chip tc74, and liquid crystal display of a procedure to verify through the board, you can directly use, the attached information tc74 Chinese

3208LED电子钟的程序及编译文件 -3208LED electronic bell procedures and compile a document

HT1621 是一款128 个位元的LCD 控制器件，内部RAM 直接对应LCD 的显示单元。相应的软件使它适用于包括LCD 模块和显示子系统在内的多功能应用。主控制器与HT1621接口只需4 到5 根线。内置的省电模式极大的降低了功耗。本文介绍HT48R05A-1 单片机来控制HT1621，并介绍如何turn ON 及turn OFF LCD 所有位元。-HT1621 is a 128-bit LCD control device, the internal RAM directly correspond to the LCD display unit. So that it applies to the appropriate software, including LCD modules and display sub-systems, including multi-purpose applications. Master controller and the HT1621 interface only 4-5 lines. Built-in power-saving mode greatly reduce power consumption. This article describes the HT48R05A-1 microcomputer to control the HT1621, and describes how to turn ON and turn OFF LCD all the bits.

51单片机教程,简单易懂,是很容易学的教程!最适合初学者的入门啦!-51 SCM Guide, easily understood, is very easy to learn from the other! The most suitable for beginners entry!