A difference timer that shows the total time between when the component or process started and the time when this value is calculated.
Formula: (D - N ) / F, where D represents the current time, N represents the time the object was started, and F represents the number of time units that elapse in one second. The value of F is factored into the equation so that the result can be displayed in seconds.
Counters of this type include System\ System Up Time.