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DS18B20.rar
本文介绍了一种基于DS18B20的数字温度计设计方案。方案利用AT89S52单片机控制DS18B20进行数据采集并由HS1602液晶显示模块显示结果，另外，采集结果可由RS-232-C接口送入计算机显示并存储。按键控制实现过界报警温度设定和实时监控，利用AT24C08芯片进行存储，实现温度测量存储与再现。
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zylgpsr356.rar
... is not provided with such a driver, then use a USB controller whose vendor provides a virtual serial port driver, such as FTDI or use a USB/RS-232 adapter.
With this component you will be able to develop robust GPS Delphi or C++Builder applications.
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DCS.rar
... unique packaging techniques, the
DCS Family provides continuous full
output power (1 kW or 3 kW) in any
volt/amp combination within the rated
output voltage and current limits.
Options include an internal IEEE-488/
RS 232 interface, isolated analog
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LC-XA12100-E-0810.rar
... unique packaging techniques, the
DCS Family provides continuous full
output power (1 kW or 3 kW) in any
volt/amp combination within the rated
output voltage and current limits.
Options include an internal IEEE-488/
RS 232 interface, isolated analog
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LC-XA12100-C-0810.rar
... unique packaging techniques, the
DCS Family provides continuous full
output power (1 kW or 3 kW) in any
volt/amp combination within the rated
output voltage and current limits.
Options include an internal IEEE-488/
RS 232 interface, isolated analog
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LC-XA12100.rar
... unique packaging techniques, the
DCS Family provides continuous full
output power (1 kW or 3 kW) in any
volt/amp combination within the rated
output voltage and current limits.
Options include an internal IEEE-488/
RS 232 interface, isolated analog
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RS485.rar
阐述了RS-485总线规范，描述了影响RS-485总线通信速率和通信可靠性的三个因素，同时提出
了相应的解决方法并讨论了总线负载能力和传输距离之间的具体关系。
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1.rar
介绍了RS-232到RS-485的转换，以及用此拓扑结构在工程实践中的应用
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