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A computer is a device that is assembled with a combination of components and elements and is programmed to automatically complete logical and sequential operations. The term ‘computer’ is not any single part by itself but a ‘sum of many parts’ working together. The physical components or elements that can be seen and handled or felt are collectively called ‘computer hardware; these elements more or less constitute the computer system.
Components or elements that are a part of ‘computer hardware’ are the chips, computer data storage, hard disk drive, graphic cards, keyboard, memory, monitor, motherboard, mouse, sound cards etc. In contrast, ‘computer software’ cannot be seen; it is the set of instructions or commands or programs installed in the computer and run by the hardware. netbook