Software means computer instructions or data. Anything that can be stored electronically is software. Software is often divided into two categories. Systems software includes the operating system and all the utilities that enable the computer to function. Applications software includes programs that do real work for users.
Computer hardware is the physical parts or components of a computer, such as the monitor, mouse, keyboard, computer data storage, hard disk drive (HDD), system unit (graphic cards, sound cards, memory, motherboard and chips), and so on, all of which are physical objects that can be touched (that is, they are tangible).
the branch of knowledge that deals with the creation and use of technical means and theirinterrelation with life, society, and theenvironment, drawing upon such subjects asindustrial arts, engineering, applied science, andpure science.