RS-232接口转USB接口通信的实现  

An embedded converter from RS-232 to universal serial bus

作　　者：任治国[1] 王大方[1] 黄红兵[1] 

机构地区：[1]武汉大学电气信息工程学院,湖北武汉430072

出　　处：《电力系统通信》2002年第10期7-9,12,共4页Telecommunications for Electric Power System

摘　　要：以IC卡门禁考勤系统为例 ,提出了一种将传统的RS 2 32接口转化为通用串行总线 (USB)接口与PC机通信的嵌入式转换器的设计方案。先剖析了USB通信内核 ,然后探讨了系统软。This paper describes a PC communication implementation of an embedded converter from RS 232 to USB on IC card door lock and access control system. First,the core of USB communication is exposed and analyzed. Second, the design and implementation of software and hardware of the system are discussed in detail.

关 键 词：RS-232接口 USB接口 通信 人机接口设备 

分 类 号：TP334.7[自动化与计算机技术—计算机系统结构]