The human brain is a lot like a computer. It uses a system similar to transistors, although on a smaller scale, and it's far more redundant (Unlike a computer in the brain there is a possibility for electrons to "slip", this is because the "transistors" are incredibly small, something like 4 to 8 times smaller then in a computer. This is also the reason Moores law will break down as transistors become too small to run properly. You will end up getting 1s where 0s are supposed to be. The brain compensates for this by multiplying the number of transistors, and connecting them to many different locations, until they form a web in which a message can be carried through the system and manipulated without the loss of data)
So to answer the question you could look at what happens when you shut your computer off.
