hi! i am working on digital clock using rtc8563 & 89c51 controller.there is also a temprature sensor using lm335 & adc0809 with same 89c51on different port.the lcd will show time,day,date & temprature.help me in implementing the programming and interfacing.programming will be in assembly language.its a urgent.IF HAVE ANY IDEA SEND ME ON MY MAIL ID: hnk_arora@yahoo.co.in