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Sometimes abbreviated as SW and S/W, software is a collection of instructions that enable the user to interact with a computer, its hardware, or perform tasks. ... The picture to the right shows a Microsoft Excel box, an example of a spreadsheet software program. Shikshabadhao There are two main types of software: systems software and application software. Systems software includes the programs that are dedicated to managing the computer itself, such as the operating system, file management utilities, and disk operating system (or DOS).Software is a program that enables a computer to perform a specific task, as opposed to the physical components of the system (hardware).The Importance Of Software Development Services. Software development is an umbrella term used to refer to the overall process that involves several tasks, such as computer programming, documenting, repairing and testing that concern both the creation and the maintenance of applications and frameworks.The three most common operating systems for personal computers are Microsoft Windows, Mac OS X, and Linux.Windows 7 is the most popular operating system for desktop and laptop computers. Android is the most popular smartphone operating system. iOS is the most popular tablet operating system. Variants of Linux are most widely used in the Internet of things and smart devices.System software is a type of computer program that is designed to run a computer's hardware and application programs. If we think of the computer system as a layered model, the system software is the interface between the hardware and user applications.