Editing Overhead projector (section)

===Decline in use===
Overhead projectors were once a common fixture in most [[classroom]]s and business conference rooms in the United States, but in the 2000s they were slowly replaced by [[document camera]]s, dedicated computer projection systems and [[interactive whiteboard]]s.<ref name="Kind">{{cite book |url=https://books.google.com/books?id=6it-AgAAQBAJ&pg=PT146 |title=Science: Teaching School Subjects 11-19 |last1=Kind |first1=Vanessa |last2=Taber |first2=Keith |page=146 |publisher=Routledge |year=2005 |isbn=978-0-415-36358-7}}</ref><ref name="Chacos" /> Such systems allow the presenter to project directly from an application such as [[Microsoft PowerPoint]] or [[LibreOffice]], and presentations can include animations, interactive components, and video clips. The image quality from these systems is generally better than an overhead projector.  The need to print or photocopy color transparencies is eliminated.