Software is defined narrowly as unambiguous instructions that can be transformed into a form executable on computer hardware, or more broadly including supporting concepts, tools and methods needed to make the computer system operational.. Building off of previous innovations in mathematics and technology, software was created for the programmable digital computers that emerged in the late 1940s and was necessary to realize their usefulness. The first software was tied closely to the underlying. Software is defined narrowly as unambiguous instructions that can be transformed into a form executable on computer hardware, or more broadly including supporting concepts, tools and methods needed to make the computer system operational.. Building off of previous innovations in mathematics and technology, software was created for the programmable digital computers that emerged in the late 1940s and was necessary to realize their usefulness. The first software was tied closely to the underlying.