| Noun | 1. | computer peripheral - (computer science) electronic equipment connected by cable to the CPU of a computer; "disk drives and printers are important peripherals"electronic equipment - equipment that involves the controlled conduction of electrons (especially in a gas or vacuum or semiconductor) printer - (computer science) an output device that prints the results of data processing computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures | |