1987年PowerPoint正式与用户见面，PPT格式是微软件的办公软件PowerPoint编辑后保存的文件格式，也叫演示文档PPT(Power Point)+电脑+投影仪，替代了传统的胶片和幻灯。
PPT已经成为了演示文档的标准之一，在商业领域和教育领域发挥了重要的作用，我们一起来回顾一下PowerPoint的历史吧!ppt20年发展历史回顾
Microsoft PowerPoint 2.0
Microsoft PowerPoint 2.0, demo, Macintosh edition
Microsoft PowerPoint 3.0
Microsoft PowerPoint 3.0, part of Office 4.0 package
Microsoft PowerPoint 4.0
Microsoft PowerPoint 4.0 with thanks to Scoops
Microsoft PowerPoint 95
Microsoft PowerPoint 95, version 7.0, Polish
Microsoft PowerPoint 97
Microsoft PowerPoint 97 with thanks to Scoops
Microsoft PowerPoint 98
Microsoft PowerPoint 98, Macintosh edition
Microsoft PowerPoint 2000
Microsoft PowerPoint 2000, Polish
Microsoft PowerPoint 2001
Microsoft PowerPoint XP
Microsoft PowerPoint XP
Microsoft PowerPoint v. X
Microsoft PowerPoint v. X, Macintosh edition
Microsoft PowerPoint 2003
Microsoft PowerPoint 2003
Microsoft PowerPoint 2004
Microsoft PowerPoint 2004, Macintosh edition
Microsoft PowerPoint 2007
Microsoft PowerPoint 2007, beta 2 with thanks to Daniel Clemens
