摘要
介绍了基于AT89S52单片机、RS232接口标准和MAX232电平转换器件设计的单片机和PC机通信电路,叙述了RS232接口标准的特性,绘出了MAX232电路连接图,编写了基于RS232直连无modem方式的完整程序。
This article introduces the design process of serial communication circuit between singlechip and personal computer based on AT89S52 singlechip, the interface standard of RS-232, and the MAX232 instrument of electric tension changing. It recounts the character of RS-232 interface standard, describes the circuit diagram of MAX232, and compiles the whole program of this design based upon the mode of no modem direct connection about RS-232.
出处
《山西电子技术》
2009年第4期46-46,58,共2页
Shanxi Electronic Technology
关键词
串行通信
电路
程序
设计
serial communication
circuit
program
design
