Starting in 1994, professional presentation using presentation graphic programs has become a norm. Everyone began using presentation graphics; Professors give presentations to students on their lectures. Students are also required to give presentations in class.
Lin, Frank M.
"Microsoft PowerPoint for Windows 4.0,"
Journal of International Information Management: Vol. 4
, Article 9.
Available at: http://scholarworks.lib.csusb.edu/jiim/vol4/iss1/9