Computer software, or just software, is a collection of computer programs and related data that provide the instructions for telling a computer what to do and how to do it. In other words, software is a conceptual entity which is a set of computer programs, procedures, and associated documentation concerned with the operation of a data processing system. We can also say software refers to one or more computer programs and data held in the storage of the computer for some purposes. In other words software is a set of programs, procedures, algorithms and its documentation. Program software performs the function of the program it implements, either by directly providing instructions to the computer hardware or by serving as input to another piece of software. The term was coined to contrast to the old term hardware (meaning physical devices). In contrast to hardware, software is intangible, meaning it "cannot be touched". Software is also sometimes used in a more narrow sense, meaning application software only. Sometimes the term includes data that has not traditionally been associated with computers, such as film, tapes, and records.

Noun

Wikipedia software (uncountable)

1. (computing) Encoded computer instructions, usually modifiable (unless stored in some form of unalterable memory such as ROM). Compare hardware.
   • 1958, John W. Tukey, "The Teaching of Concrete Mathematics" in The American Mathematical Monthly, vol. 65, no. 1 (Jan. 1958), pp 1-9:

     The "software" comprising the carefully planned interpretive routines, compilers, and other aspects of automative programming are at least as important to the modern electronic calculator as its "hardware" of tubes, transistors, wires, tapes and the like.

   • 1995, Paul Niquette, Softword: Provenance for the Word ‘Software’:

     As originally conceived, the word "software" was merely an obvious way to distinguish a program from the computer itself. A program comprised sequences of changeable instructions each having the power to command the behavior of the permanently crafted machinery, the "hardware."

• application software
• kitchen table software
• software assurance

• object-oriented software
• software cracking
• software engineering

• software tests
• system software

Computer software is a general term used to describe a collection of computer programs, procedures and documentation that perform some task on a computer system.

Sourced

• A solid working knowledge of productivity software and other IT tools has become a basic foundation for success in virtually any career. Beyond that, however, I don't think you can overemphasise the importance of having a good background in maths and science.
  • Bill Gates, Bill Gates: The skills you need to succeed. BBC News (14 December 2007).

• Software is like sex; it's better when it's free.
  • Linus Torvalds

• When done well, software is invisible.
  • Bjarne Stroustrup on wired.com