serial.h serial.cpp 共两个文件，VC串口封装API类

下载工具源代码，用于串口RS232下载，二次下载-download source code

1、本实验箱采用的液晶显示屏内置控制器为SED1520，点阵为122x32，由两片SED1520组成，由E1、E2分别选通，控制显示屏的左右两半屏。-1, the experimental use of the boxes built-in LCD controller for SED1520, to 122x32 dot matrix, composed of two SED1520, E1, E2 respectively strobe control screens around two semi-screen.

485编程实例分析文档-485 Programming Document Analysis

UART双机通讯范例，采用中断方式，请大家多提意见-Dual UART communications paradigm used disrupted the way, please do so everyone

c8051F221的SPI总线通信(收)-c8051F221 SPI Bus Communication (received)

common communication

soome examples of I2C transfer

vb串口使用简介,对初学vb串口编程的人有帮助的。-vb use profiles for beginners vb serial programming of help.

监视Modbus规约的通讯程序，可以监视上下行报文

串口控制程序一般分为查询和中断两者方式。查询方式适用于简单的应用，简单可靠，但是缺点是需要占用处理器资源，在发送或者接收数据的时候不能做其它的事情，处理器利用率低。中断方式下，在发送或者接受数据的时候处理器还可以做其它的工作，效率较高。-Serial control procedures will generally be divided into two way query and interruption. Query applied to simple applications, simple and reliable, but the drawback is the need to occupy processor resources to send or receive data at the time should not make other things, the processor utilization rate. Interrupt mode, the send or accept data when the processor can do other work, more efficient.