I understand how an SR Latch works: is S is 1, it will set Q to 1. If R is 1 it will set Q to 0.
If both S and R are 0, the value of Q should remain unchanged (right?). So the circuit has these stable states:
Now my question is: If 0 voltage is flowing through both the input wires, how can the 1 still exist in the circuit? There must be an external power supply? (I'm assuming there must be because, if you disconnect your computer, everything in the RAM gets wiped) but where would this power supply go without disrupting this circuit?
I hope my question was clear. I just don't understand how it can keep its value when the inputs are 0.