条码扫描器与单片机的接口设计  

Bar-code Scanner and Design for Interface of Single Chip

作　　者：李建国[1,2] 赵战民[1,2] 刘卿[1,2] 

机构地区：[1]石家庄经济学院 [2]石家庄信息工程学院

出　　处：《中国自动识别技术》2008年第6期97-99,共3页China AUTO-ID

摘　　要：基于对PS/2接口协议和条码扫描器输出数据格式的认识,从触发方式和接收方式两个方面详细分析了单片机读取条码数据的原理与实现方法,同时给出了扫描码与ASCII码的转换程序设计。在应用中,给出了条码扫描器与MCU的接口电路及通行方案,并介绍了单片机对条码数据识别系统一种典型应用方法。This article analyzes the principle of reading data for a single chip and provides a design program of scanning as well as ASCII transfer program for readers, based on PS/2 interface negotiation and data format of bar-code scanner, from triggering mode and receiving mode. In the process of application, the article as well provides answers for solution of bar-code scanner and MCU interface, and introduces a typical method of date recognition of simple chip.

关 键 词：条码扫描器 单片机 接口设计 ASCII码 典型应用 数据格式 接口协议 PS/2 

分 类 号：TP391.44[自动化与计算机技术—计算机应用技术]