How do computers store data?

How do computers store data?

All the data stored in your computer- every word, picture, number, and sound- is captured as a series of electrical pulses that are either on or off. A number system called binary is  used to represent these pulses with "1" meaning "on" and "0" meaning "off". A single binary digit, known as a "bit", switches a single switch on or off. By linking together these switches, the computer can carry out the complex operations we demand.