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AmulticenertestsystemdesignbasedonC8051Fmicro_proc
- 研究了一种基于C8051F处理器以及LCD显示的多通道输入输出参数检测系统，采用总线型设计，通过I2C以及232/485串行接口实现与现场设备以及上位机（PC机）之间的通讯
RS232_RS485zhaunhuan
- 这是一个232和485转换的电路，大家可以做为一个参考
RS-232、RS-422与RS-485标准及应用
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LED显示屏异步控制系统毕业设计
- 以单片机 AT89C51 为控制器的点阵 LED显示屏异步控制系统作为毕业设计。该 系统采用开关电源作标准电源，RS-232/RS-485 通信标准，通过 AT89C51的串行接口接收 PC 机的控制命令及显示数据， 经处理后控制LED显示屏的扫描显示。 该系统采用了大容量Flash 存储器 AT29C020 作为数据存储器。,LED strip display control system for asynchronous
RS232
- RS-232、RS-422与RS-485都是串行数据接口标准，最初都是由电子工业协会（EIA）制 订并发布的，RS-232在1962年发布，命名为EIA-232-E，作为工业标准，以保证不同厂家产品 之间的兼容。RS-422由RS-232发展而来，它是为弥补RS-232之不足而提出的。为改进RS-232 通信距离短、速率低的缺点，RS-422定义了一种平衡通信接口，将传输速率提高到10Mb/s， 传输距离延长到4000英尺（速率低于100kb/s时），并允许在一条平衡总线上连接最
Schematic
- RS-232 to RS-485/422 Converter schematic. It can support RS-422 and RS-485 to change only two jumppers. And it used general devices. 75176 can be replaced max485, 65LBC184 etc.
LAN-WAN_Rev1.0
- Transporting DNP V3.00 over Local and Wide Area Network. 1 Overview 1.1 Purpose DNP V3.00 (hereafter referred to simply as DNP) was designed for serial point-to-point communication (e.g. RS-232) with limited support for half duplex serial ne
232TO485
- 232直接转成全双工（4线制）485接口 只用一片MAX488即能转换成功，其实是422通信方式，已经测试通过。 带有配套电源电路-232 be transferred directly into a full-duplex (4 wire system) 485 with only a MAX488 that is able to convert successfully, in fact, is a 422 means of communication have been teste
RS-232RS-422RS-485
- RS-232、RS-422与RS-485标准及应用,详细解答了关于232 485通信的知识-RS-232, RS-422 and RS-485 standard and application, detailed answers to the communication of knowledge about 232,485
232-485
- 232-485 Serial communication Xiang Jie
RS232
- The Document Gives the basic idea about RS485 communication with the PC. It shows basic hardware arrangement of Rs-232 to 485 converter
232-485
- 描述基本的rs232转485的基本电路接线方法，简单实用-Describe the basic rs232 wiring circuit switch 485 of the basic method is simple and practical
RS-232-RS-422-RS-485
- RS-232、RS-422与RS-485标准及应用-RS-232, RS-422 and RS-485 Standard and Application
RS-232-RS-422-RS-485
- RS-232、RS-422与RS-485标准及应用.doc-RS-232, RS-422 and RS-485 standards and applications. Doc
RS232-422-485
- 一种9针RS-232-422-485各脚名称和顺序的定义-Name of 9pin about RS232-422-485
232-485
- 232到485的数据转换电路，实现了rs232到485总线的转换，传输距离大大增加。-232-485 data conversion circuit, converting a rs 232-485 bus transmission distance is greatly increased.
Interface_standards
- Summary of RS-232, RS-422, and RS-485 Interface Standards
Rs485 Rs422
- RS-422 and RS-485 Application Note
AN723
- APPLICATION NOTE 723: Selecting and Using RS-232, RS-422, and RS-485 Serial Data Standards