what is microsoft office excel
Microsoft Excel is a spreadsheet developed by Microsoft for Microsoft Windows, Mac OS X, and iOS.It features calculation, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications.n Microsoft Excel 95 and earlier versions, password to open is converted to a 16-bit key that can be instantly cracked. In Excel 97/2000 the password is converted to a 40-bit key, which can also be cracked very quickly using modern equipment.