Auto Power off in PIC if gets Idle for some time interval

How to Program pic to make it auto Power off if it gets idle for some time period. like we see in calculators. when we let calculators idle for some time so then it shutdown automatically. I want to program this auto power off in Pic. Please Help

Fingerprint security base system

Hi, i need the liabrary for SD card and camera in proteus 8. Can please help send me the link here. and i had been searching for Lm1117 volt regulator but i couldnt find it. Please help me
Syed Zain Nasir

I am Syed Zain Nasir, the founder of <a href=https://www.TheEngineeringProjects.com/>The Engineering Projects</a> (TEP). I am a programmer since 2009 before that I just search things, make small projects and now I am sharing my knowledge through this platform.I also work as a freelancer and did many projects related to programming and electrical circuitry. <a href=https://plus.google.com/+SyedZainNasir/>My Google Profile+</a>

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Syed Zain Nasir