What is computer hardware?

Computer Hardware is the name given to tangible electronic components that are part of a computer system. The key words are “tangible” and “electronic”. Tangible means something that you can physically touch and feel. Electronic refers to a device that has circuits in it that control its operation.
Computer hardware can be divided into many different categories but, generally speaking, you have what I like to call core hardware and peripheral devices. Core hardware consists of those parts that are essential to the operation of the computer. Core hardware is installed in the computer case and peripheral devices are hardware devices that connect to the case but are external to it.