The real power and use of what the computer can do, however, is largely a function of the software that is installed into these various systems. The most fundamental of the software functions is the operating system OS that runs the computer. Examples of the OS include Windows XP, Windows 2000, Linux, Mac OC, and Unix.

These provide different processes through which we operate and work on our computer systems.

The software directs the computer to perform very specific tasks such as creating a financial spreadsheet/statement/model, preparing a slide presentation, or writing a document on a word processing program. Specific applications software include programs such as Microsoft's Word (word processing), PowerPoint (presentations), and Excel (financial spreadsheets).

Managing the hardware and software that are used in any business is a difficult task because it requires understanding the functions of each and understanding their purposes.

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