Backlight switch info?

Ikarias

Honorable
Nov 1, 2013
2
0
10,510
How does the laptop know when to turn the backlight on or off? there doesnt seem to be a mechanical switch of the sort.
 
Solution
I understand, some old laptop have a mechanical switch, but the most recent have a magnetic switch. You have a magnet in the lid and a component who detect the magnet when you close the lid.

Ikarias

Honorable
Nov 1, 2013
2
0
10,510


I didn't explain enough I think. I meant when the lid closes.