Turn LED on/off using rs232 port

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sanjay 09ES48

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i have a rs232 port, a max 232 for converting rts levels to TTL levels.
but dont know how to send data from pc to LED.
 

Try this webpage it has complete information regarding interfacing RS232


**broken link removed**
 

write a serial communication program...from hyperterminal type the commands you want.. the controller will receive and do the operation as er your program
 

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