The Time behind time machine

One thing I was very keen to know in my childhood was to know how the second hand of clock ticks exactly at 1 second...
One thing I was very keen to know in my childhood was to know how the second hand of clock ticks exactly at 1 second each. So every time I got chance, I opened almost every watch, clock in our home to see it. I used to think that I'll remember the sequence in which I opened that so that later I can join it back but I never did and ended up breaking all of the watches, clocks I opened. Even after opening them, I was too small to understand the electronics behind. There was a time, I remember...