1)-Overview :

Simple system to display time/date & temperature in a circular manner.

2)-Components :

• PIC18F452
• LM35
• MAX6902

3)-Working Concept :

i'm using LM35 analog temperature sensor and using spi protocol to fetch time/date from MAX6902 RTC to display the time/date & temperature in a circular manner i have used a timer_0 where each overflows triggers an interrupts that dispalys either time/date or temperature based on the state of the flag.