History Of Microsoft Office

Microsoft Office is a set of interrelated desktop applications, servers and services, collectively referred to as an office suite, for the Microsoft Windows and Mac OS X operating systems. Office was introduced by Microsoft in 1989 on Mac OS,
[1] with a version for Windows in 1990.
[2] Initially a marketing term for a bundled set of applications, the first version of Office contained Microsoft Word, Microsoft Excel, and Microsoft PowerPoint. Additionally, a "Pro" version of Office included Microsoft Access and Schedule Plus. Over the years, Office applications have grown substantially closer with shared features such as a common spell checker, OLE data integration and Microsoft Visual Basic for Applications scripting language. Microsoft also positions Office as a development platform for line-of-business software under the Office Business Applications (OBA) brand. 

The current versions are Office 2007 for Windows, launched on January 30, 2007,
[3] and Office 2008 for Mac OS X, released January 15, 2008. Office 2007/Office 2008 features a new user interface and a new OOXML-based primary file format (docx, xlsx, pptx). Microsoft has made available a free add-on known as the "Microsoft Office Compatibility Pack" that lets Office 2000-2003 editions open, edit, and save documents created under the new Office 2007 formats