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![RS232 Tutorial on Data Interface and cables - ARC Electronics]()
www.arcelect.comRS232 data is bi-polar.... +3 TO +12 volts indicates an "ON or 0-state (SPACE) condition" while A -3 to -12 volts ...瀏覽：366 -
![RS232 Specifications and standard - Lammert Bies]()
www.lammertbies.nlPractical discussion of the RS232 standard and its specifications and properties.瀏覽：1457
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日期：2026-04-19
RS232 data is bi-polar.... +3 TO +12 volts indicates an "ON or 0-state (SPACE)
condition" while A -3 to -12 volts ......
瀏覽：1051
日期：2026-04-18
Practical discussion of the RS232 standard and its specifications and properties....
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