The term 'electron circuit' refers to a type of electrical circuit that uses electrons as its main source of energy. It is composed of components such as resistors, capacitors, and transistors, which are connected together in a specific way to create a circuit. The ORBIT of an electron is the path it follows around an atom or molecule, and is determined by the amount of energy it has. Electron circuits are used in many electronic devices, such as computers, televisions, and cell phones.