how to make the function when the value of data is holding.

how to make the function when the value of data is holding.

the value of data is not changed in 1 min(desired time),
and then, if yes, excute a function.
is it possible ??
example) when the value of data is not changed in 1 min,
excute a function - exchanging a driver .

This is a migrated post! Originally posted on 23.05.2011 by user gyu. Please be aware that information can be outdated.