Presentation on theme: "Projectors: The Old and The New By: Jackie Marciano Mike Smitherman Clifford Gipson Brett Sheppard."— Presentation transcript:
Projectors: The Old and The New By: Jackie Marciano Mike Smitherman Clifford Gipson Brett Sheppard
Description of Each Overhead Typically consists of a large box with a bright lamp and a fan to cool it with a large fresnel lens above it A lens and mirror system projects images from a pre-printed transparencies, upon which the lecturer can write on using a non-permanent, washable color marking pen Has a multirange fixed focus which allows you to move the overhead up to three feet without having to refocus Video A video projector takes a video image from a computer and then projects the image onto a projection screen using a lens system Most modern ones can correct any curves, blurriness, and other inconsistencies through manual settings.
Similarities Both used to present information and images Both used for larger viewing audiences (ie. classroom, professional setting) Need light and electricity in order to function Need prior knowledge about the device before able to use
Differences Overhead Can be as far as 3 feet away from the projector screen Requires manual adjustment for focusing Requires use of mirrors for projection Needs pre-written or pre- typed material which is then projected onto a screen Video Can be a much greater distance from projector screen Can project larger, more detailed images Focuses automatically Requires more technical knowledge to operate Needs computer to function
Cost Overhead Prices generally range from $100 to about $400 Video Prices generally range from $1000 to $4000
Benefits of Video Projector Allows use of computer programs for teaching purposes Ex. PowerPoint Much easier to edit information Clearer viewing, higher resolution More professional appearance Much faster and more efficient Can be connected to an interactive white board to interactively teach the students
Conclusion The benefits of the video projector outweighs the financial cost The evolved technology allows for an improved presentation of information Projectors are compatible with various computers, making them user-friendly
Resources “Epson PowerLite 410W WXGA LCD Short-Throw Classroom Projector.” http://www.projectorcentral.com. ProjectorCentral.http://www.projectorcentral.com “The Evolution of Projection Technology.” http://www.projectorcentral.com/projectors-evolution.htm. Projector Central http://www.projectorcentral.com/projectors-evolution.htm
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