A neuron has an electrical charge which transmits information to other cells, how is this information stored and held within electricity?

I understand that computers use binary code to decipher information stored in the hard-drive, but how is the electrical charge decoded to pick and sort through the information. There are also things we know that we will never unlearn "assuming we stay sane", how is this information stored? Is it through constant sub conscious remembrance that it stays relevant? Or does our brain act like a hard drive which stores information in our brain leaving a physical imprint?