Why computers use "0" and "1"?!?

in computers we defined a special voltage as "1", and a special voltage as "0" ... why we use 0 and 1 in computers ?! why we don`t define some other voltages as other numbers and use them in computers?!--- excuse me if my question had grammatical problems!---

Why computers use "0" and "1"?!?microsoft

It all has to do with the ease of building a transistor.

A transistor is an electronic device that takes an input from on side and flips a switch from on to off. This is like standing at a light switch and when someone touches you, you flip the switch. On or off. When programming it is much easier to us "I" and "O" instead of on and off. You then count with 1s and 0s. You put switches in an array. You need four switches to count to 16 and eight switches to count to 64. We now have 32 and 64 bit computers that can count higher.

You can actually put billions of these transistors on a single wafer using silicon as barrier to stop the flow of energy out of the switch. It is a great way to compute.

Hey, here is a cool fact. Our brain is much more confusing. 1 neuron can pass on one signal to another neuron. BUT, a single neuron usually has many different input to tell it whether or not to switch. Basically like a transistor but with twenty different people trying to flip a switch. Maybe that is why it gets so confused up there.