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   7.9  
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 7.2.1  7.2.2  7.3  7.5  7.6  7.9
 
 
 7.9a  7.9b
 
   
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  Question:  
  7.9  Sketch the schematics for a new RS232 cable having a 9-pin connector on one end and a 25-pin on the other for:
    a.)  Software handshaking.
    b.)  Hardware handshaking.
 
 
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