computer hardware

Computer hardware is the physical part of a computer, including the digital circuitry, as distinguished from the computer software that executes within the hardware. The hardware of a computer is infrequently changed, in comparison with software and data, which are "soft" in the sense that they are readily created, modified or erased on the computer. Firmware is a special type of software that rarely, if ever, needs to be changed and so is stored on hardware devices such as read-only memory (ROM) where it is not readily changed (and is, therefore, "firm" rather than just "soft").
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Noun
1. (computer science) the mechanical, magnetic, electronic, and electrical components making up a computer system
(synonym) hardware
(hypernym) component, constituent, element
(hyponym) central processing unit, CPU, C.P.U., central processor, processor, mainframe
(part-holonym) computer, computing machine, computing device, data processor, electronic computer, information processing system
(classification) computer science, computing