hi my friends.
i have a question about arduino mega 2560
which pins in this board are hardware interupt?
and which pins in this board are timer interupt?

thank you.

Search for "External interrupts" on the product page for the Mega 2560 to see the hardware interrrupt pins.

Timer interrupts are not connected to pins, they are connected to timer count registers. Each timer has various pins associated with it which have various functions depending on mode.