A computer is a digital ADJECTIVE machine that can be programmed to carry out PLURAL NOUN of arithmetic or logical operations ADVERB. Modern computers can perform generic sets of operations known as PLURAL NOUN. These PLURAL NOUN enable computers to perform a wide range of PLURAL NOUN. A computer NOUN is a "complete" computer that includes the hardware, operating system (main software), and ADJECTIVE equipment needed and used for "full" NOUN. This term may also refer to a group of computers that are linked and function together, such as a computer NOUN or computer NOUN.