Software is a collection of computer programs and documentation that performs tasks on a computer system. There are two main types: application software for specific tasks like accounting or photo editing, and system software that runs the computer like operating systems. Software is important because modern economies and industries rely on software to control systems in areas like aviation, healthcare, and more. Software engineering is the systematic and disciplined development, operation, and maintenance of software applications. Software products can be standalone systems sold to general customers, or customized products developed specifically to meet a single customer's needs like air traffic control systems.
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