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LAN-WAN_Rev1.0.zip
... as DNP) was designed for serial point-to-point communication (e.g. RS-232) with limited support for half duplex serial networks (e.g. RS-485). In order for devices to exchange DNP messages in a local (LAN) and/or wide area ...
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rs.rar
感到很反对回复经国家富豪和 东方鼓腹含和超负荷红-
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SC28L198.rar
SC28L198是一个带有8个全双工异步通道UART的芯片，每个UART通道的接收器和发送器都拥有16字节深度的FIFO。芯片的每个UART通道除了基本的异步通信功能外，还可实现软件流控制（in-band flow control）、硬件流控制（out-of-band flow control）、以及多点模式（唤醒模式或RS-485模式）等，同时每个UART都有4个外扩的I/O引脚，每个外扩I/O引脚都为功能复用。
本资料包含完整测试程序，应用文档，电路原理图及PPT演示文档等。
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NULLMODEM.rar
This program is for beginners...Its basic NULL modem program to understand the concept behind NULL modem.before executing short circuit the rs 232 port 1 and 2 for transmission ogf messages
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Embedded_Hardware.rar
... Embedded Systems
Chapter 7: Choosing a Microcontroller and Other Design Decisions
Chapter 8: The Essence of Microcontroller Networking: RS-232
Chapter 9: Interfacing to Sensors and Actuators
Chapter 10: Other Useful Hardware Design Tips and Techniques
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D18B20.rar
8051用DS18B20测温,4小数用1602显示,P1^7 为DS18B20单总线引脚,P2^4-P2^6对应1602的:RS,RW,EN.P0^0-P0^7为1602DB0-DB7接口.
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PROC.rar
学习\单片机光盘文件\程序代码与电路图\第28章 单片机实现RS-485总线现场监测系统
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