With this component, you're able to get a computer tick. This tick represents a time in 100-nanosecond. With this tick you're able to calculate the time that has past between 2 ticks.

When you divided the difference between two ticks by 10.000 you get the number in milliseconds.

I've also built an example application with this so you can see for which purposes and how you can apply this logic in your own situation.