hi...
I have an RS232 db9 with female on one side and male on one side..the female is connectd to the PC and the male is connected the 89c51 kit (with max232).
My doubt is that 2 pin of female should be connected to 3rd pin of male or to the 2nd pin of male??
how do we check whether data is passing through the rs232 using a multimeter??
Is this following assumption right?? female rs232 --- 2-tx 3-rx male rs232------ 2-rx 3-tx