The term 'Joule Bit' is a combination of two words: Joule and Bit. Joule is a unit of energy, named after the English physicist James Prescott Joule. A bit is a unit of information, which is the smallest unit of data in computing. Together, Joule Bit is a measure of energy used to store information in computing. The term 'ERG' is an abbreviation for ergonomics, which is the study of how people interact with their environment. Ergonomics is important in computing because it helps to ensure that the user experience is comfortable and efficient.