Project

whether arduino can be used for timer?
please help me

You can time events Using the Arduino platform.

bigazer:
whether arduino can be used for timer?

The Arduino can be used as a timer. It is limited to a precision of a few microseconds and can be off by several minutes a day so it is best for times of a few milliseconds to a few minutes.

You should change the thread title so people know what it's about. Hint - you could put "timer" in there somewhere.