Microsoft Excel

Microsoft Excel (full name Microsoft Office Excel) is a spreadsheet application written and distributed by Microsoft for Microsoft Windows and Mac Os X. It features calculation, graphing tools and a macro programming language called VBA (Visual Basic for Application). It has been a very widely applied spreadsheet for these platforms, especially since version 5 in 1993. Excel forms part of Microsoft Office. The current versions are Microsoft Office Excel 2010 for Windows and 2008 for Mac.

Versions of Microsoft Excel:

Windows	1990 Excel 3.0 1992 Excel 4.0 1993 Excel 5.0  1995 Excel for Windows 95 (version 7.0)  1997 Excel 97  1999 Excel 2000 (version 9.0) 2001 Excel 2002 (version 10)  2003 Excel 2003 (version 11)  2007 Excel 2007 (version 12)  2010 Excel 2010 (version 14)
Macintosh	1985 Excel 1.0 1988 Excel 1.5 1989 Excel 2.2 1990 Excel 3.0 1992 Excel 4.0 1993 Excel 5.0 1998 Excel 8.0 2000 Excel 9.0 2001 Excel 10.0 2004 Excel 11.0  2008 Excel 12.0 2010 Excel 14.0
OS/2	1989 Excel 2.2 1990 Excel 2.3 1991 Excel 3.0

Microsoft Excel has the basic features of all spreadsheets using a grid of cells arranged in numbered rows and letter-named columns to organize data manipulations like arithmetic operations. It has a battery of supplied functions to answer statistical, engineering and financial needs. In addition, it can display data as line graphs, histograms and charts, and with a very limited three-dimensional graphical display. It allows sectioning of data to view its dependencies on various factors from different perspectives. And it has a programming aspect, Visual Basic for Applications, allowing the user to employ a wide variety of numerical methods, for example, for solving differential equations of mathematical physics and then reporting the results back to the spreadsheet.

It also has a variety of interactive features allowing user interfaces that can completely hide the spreadsheet from the user, so the spreadsheet presents itself as a so-called application, or decision support system (DSS), via a custom-designed user interface, for example, a stock analyzer or in general, as a design tool that asks the user questions and provides answers and reports^. In a more elaborate realization, an Excel application can automatically poll external databases and measuring instruments using an update schedule,analyze the results, make a Word report or Power Point slide show, and e-mail these presentations on a regular basis to a list of participants.

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