Computing
Computing is any goal-oriented activity requiring, benefiting from, or creating computers. Computing includes designing, developing and building hardware and software systems; designing a mathematical sequence of steps known as an algorithm; processing, structuring, and managing various kinds of information; doing scientific research on and with computers; making computer systems behave intelligently; and creating and using communications and entertainment media. The field of computing includes computer engineering, software engineering, computer science, information systems, and information technology.
Engineering
Engineering is the creative application of science, mathematical methods, and empirical evidence to the innovation, design, construction, operation and maintenance of structures, machines, materials, devices, systems, processes, and organizations. The discipline of engineering encompasses a broad range of more specialized fields of engineering, each with a more specific emphasis on particular areas of applied mathematics, applied science, and types of application. See glossary of engineering.
Software
Computer software, or simply software, is a part of a computer system that consists of data or computer instructions, in contrast to the physical hardware from which the system is built. In computer science and software engineering, computer software is all information processed by computer systems, programs and data. Computer software includes computer programs, libraries and related non-executable data, such as online documentation or digital media. Computer hardware and software require each other and neither can be realistically used on its own.
Software Engineering
Software Engineering is the application of engineering to the development of software in a systematic method.
Software Engineering
The business of software building isn't really high-tech at all. It's most of all a business of talking to each other and writing things down. Those who were making major contributions to the field were more likely to be its best communicators than its best technicians.
Tom DeMarco Why Does Software Cost So Much?: And Other Puzzles of the Information Age, (1995), p. 218
Engineering
Engineering: The art of organizing and directing men, and of controlling the forces and materials of nature for the benefit of the human race.
Henry Gordon Stott. Presidential address, 1908, to American Institute of Electrical Engineers. Cited in: Halbert Powers Gillette (1920) Engineering and Contracting. Vol. 54. p. 97
Software Engineering
Software engineering concerns methods and techniques to develop large software systems. The engineering metaphor is used to emphasize a systematic approach to develop systems that satisfy organizational requirements and constraints.
Hans van Vliet (2007) Software Engineering: Principles and Practice. p. 2