HI
i need the circuit diagram of MAX 232 connection with 89C51 .Actually i want 89C51 TO COMMUNICATE serially with computer..PLZ help me out
There are litterally thousands and thousands of examples of how to use a MAX232 directly available on the net. Have you spent any time looking for information?
Have you checked for schematics for sample boards that makes use of the 89C51? A serial port is so basic that all evaluation boards has serial port support!
I have the MAX 232 pin connection diagram and 89C51 MC but i need the whole connection which pins from MC connected to MAX232 and from MAX 232 which are connected to serial port
Since you not only are missing the information how to connect the 89C51 to the MAX232 but also how to connect the MAX232 to a D-Sub connector, you most definitely haven't spent a single minute looking for information yourself.
Finding out how to connect the 89C51 to the MAX232 shouldn't take many minutes more.
Unless you don't fancy google and wants someone else to google for you. Are you into distributed computing?
I strongly susupect that every Keil board features a MAX232 (or equivalent)...
http://www.keil.com/boards/
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