BIT ENERGY is a term used to describe the energy of a single bit, which is the smallest unit of information in computing. The ERG is a unit of energy equal to one billionth of a joule, and is often used to measure the energy of a single bit. The VOLT is a unit of electrical potential difference, or voltage, and is used to measure the amount of energy required to move a single bit from one point to another. Finally, the ATOM is a unit of energy equal to one millionth of a joule, and is often used to measure the energy of a single bit. Together, these three units are used to measure the energy of a single bit.