I want to make a 7 segment display that will count up since it is terned on I want it to count minutes hours days and years Im just asking advise on how I can do the time counting like a rtc or something And has anyone else done something similar so I can modify the code I want the years to be do…

time counter

system August 18, 2012, 8:06am 4

I am going to use the max7219 to drive the segments as I already have one
I just have one question
I know how to set the time on a rtc but how would I make it tell me how long since it was turned on

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time counter

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