hey please help me out in the programming part of rtc ds1307 with 8051.......... i want to initiate the sec on the register of rtc and i want to see the output on port1 . do i need to connect sda and scl to RXD and TXD of 8051.As i am connecting these lines to port 2 of 8051.please help me and i wnat the program in asm language. Anand