The document discusses the history and evolution of overhead projectors and LCD projectors. It notes that the overhead projector was invented in the 1960s but began declining in the mid-1990s as LCD projectors were invented in 1984 and allowed for better connectivity. Both technologies were used for projection, but LCD projectors surpassed overhead projectors as the preferred technology as they could more easily connect to computers and other devices.

1. Ashley Odom
Student ID: A00257081
EDUC 7108-1 Emerging & Future Technologies

2.  Invented
by Roger
Appledorn in the
1960s
 Decline
in sales and
use beginning in the
mid 1990s

4.  Invented by Gene
Dolgoff in 1984
 Allows projection for
large spaces and can
connect to
computers, document
cameras, mobile
devices, etc.

6.  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?

7.  Troy Ramirez
 Associate
IT Customer Service
Representative, Hogg Middle School
 Interview Date: October 12, 2012
Troy's interview.mp3

8.  Tiffani Moseley
 7th
Grade Math Teacher, Hogg Middle
School
 Interview Date: October 12, 2012
Tiffani's interview.mp3

9.  Jermel Viltz
 Robotics Teacher, Hogg Middle School
 Interview Date: October 11, 2012
Interview with Viltz.mp3

10.  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

11.  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

12.  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

13.  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

14.  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

15.  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

16.  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

17.  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.

18.  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