What is Computer?

A computer is a device that can be instructed to carry out an arbitrary set of arithmetic or logical operations automatically. A computer does not need to be electronic, nor even have a processor, nor RAM, nor even a hard disk. While popular usage of the word "computer" in the 2000s is synonymous with a personal electronic computer, the modern[1] definition of a computer is literally: "A device that computes, especially a programmable [usually] electronic machine that performs high-speed mathematical or logical operations or that assembles, stores, correlates, or otherwise processes information."[2] Any device which processes information qualifies as a computer.[citation needed]