I am working on a project where i am using 2 89c52. one for keyboard and other for 7 segment display. i am using 2 uc since they r 20 feet away. i am using max232 on both ends and baud rate is set to 9600. when i attach it to pc using hyperterminal it works perfect (both ucs independently). but when i attach it to each other it doesn't work. I am not able to understand what is the problem.

Yash