Invented by Roger Appledorn in the 1960s Decline in sales and use beginning in the mid 1990s
Invented by Gene Dolgoff in 1984 Allows projection for large spaces and can connect to computers, document cameras, mobile devices, etc.
In your opinion, how does the overhead projector differ from the LCD projector? If you had an overhead projector, how could it be used in your work? If you had an LCD projector, how could it be used in your work? Which of the two technologies would you prefer and why? Why do you think we see fewer overhead projectors at this campus than we do LCD projectors?
Troy Ramirez Associate IT Customer Service Representative, Hogg Middle School Interview Date: October 12, 2012 Troys interview.mp3
Tiffani Moseley 7th Grade Math Teacher, Hogg Middle School Interview Date: October 12, 2012 Tiffanis interview.mp3
Jermel Viltz Robotics Teacher, Hogg Middle School Interview Date: October 11, 2012 Interview with Viltz.mp3
Overhead projectors were used less over time Asinnovations were made, the need to create connectivity to technologies such as computers and document cameras became more ideal Deletedthe need for overhead projectors, allowed implementation of LCD projectors to emerge
Concept of overhead projector originated from the episcope Was not used practically until the 1940s by the military LCD projector was introduced while overhead projectors were still being used highly Strong emergence occurred with introduction of sophisticated monitors
Othertechnologies less sophisticated technologies before the overhead projector, none emergence as strongly LCD projector was less disruptive technology; expected with the emergence of the computer
Concept of overhead projector began in the early 1900s with the episcope Overheadprojector emerged during the 1940s and later was used in conjunction with the computer LCD projector was created with the evolution of the liquid crystal display and the need for a smaller device
Bothoverhead projectors and LCD projectors were being used in the early to mid 1990s LCD projector surpassed the overhead projector as a more suitable companion to the computer
Both types of technology were at the forefront for projection needs Overhead projector was not able to step ahead of LCD projector (older technology) Red.mp3
Popularity is beginning to wane during 2000s New technologies such as Digital Light Processing (DLP), plasma and Liquid Crystal on Silicon (LCOS) are emerging Expect to be obsolete within the next 10 years Future.mp3
Bothtechnologies provide projection services and can be used within K-12 education. Astechnology has progressed, the LCD projector has moved to the forefront as the more efficient technology. Withinthe future, this technology, like others before it, will become obsolete as another form emerges with the times.
Answers Corp. (n.d.). Who invented the LCD projector? Retrieved on November 15, 2012 from http://wiki.answers.com/Q/Who_invented_the_LCD_projector Laureate Education Inc. (2009). Six forces that drive emerging technologies: Author Memebridge. (2012). Who invented the overhead projector? Retrieved on November 14, 2012 fromhttp://www.whoinventedit.net/who-invented-the- overhead-projector.html Thornburg, D. (2008c). Red Queens, butterflies, and strange attractors: Imperfect lenses into emergent technologies. Lake Barrington, IL: Thornburg Center for Space Exploration. Tsivkin, Roman. (2010). About LCD projectors. Retrieved on November 17, 2012 from http://www.ehow.com/about_4740803_lcd-projectors.html