Great Software Articles
Great software articles found here on the web
Featured Articles
    History of computing
Computers
    Acer
    Alienware
    Asus
    Dell
    Gateway
    HP, Compaq
    IBM, Lenovo
    Sony
    Whitebox, Custom Systems
Apple Computers & Components
    Apple Accessories
    Apple Components
    Apple Desktops
    Apple Laptops & Notebooks
    Apple Networking
    Apple Printers, Scanners & Ink
    Vintage Apple
    Wholesale Lots
    Other
Retail Equipment & Supplies
    Beauty & Salon Equipment
    Labeling & Tagging Supplies
    Mannequins & Dress Forms
    Racks & Fixtures
    Security & Surveillance
    Shopping Carts & Baskets
    Other
Plastics
    Auxiliary Process Equipment
    Injection, Blow Molding
    Molds, Dies
    Raw Materials & Scrap
    Other Items
Manufacturing & Metal Working
    Manufacturing Equipment
    Metalworking Equipment
    Metalworking Tooling, Supplies
    Process Equipment
    Metals & Alloys
    Semiconductor & PCB Equipment
    Textile & Apparel Equipment
    Welding
    Other
Printers
Printer Supplies & Accessories
    Cleaning, Repair Kits
    Feeders, Trays
    Ink Cartridges
    Ink Refill Kits
    Ink Ribbons
    Laser Drum Cartridges, Fusers
    Laser Toner
    Power Supplies
    Print Heads
    Printer Memory
    Printer Paper
    Sign Vinyl
    Other
Office Products
    CD-R, DVD-R, Blank Media
    Copiers & Copier Supplies
    Fax Machines & Supplies
    Microfilm & Microfiche
    Office Equipment
    Office Furniture
    Presentation, AV, Projectors
    Shredders
    Supplies & Small Equipment
    Trade Show Displays
    Other Office Products
    Wholesale Lots
Industrial Equipment, MRO
    Adhesives & Sealant
    Cleaning Equipment & Supplies
    Commercial Radios
    Compressors
    Fasteners & Hardware
    Forklifts & Other Lifts
    Forklift Parts & Accessories
    Government & Public Safety
    HVAC
    Hydraulics & Pneumatics
    Lighting & Lasers
    Industrial Automation, Control
    Manuals, Books
    Forklifts & Material Handling
    Painting Equipment & Supplies
    Motors, Transmissions
    Professional Tools & Hardware
    Pumps & Plumbing
    Pumps
    Safety & Security
    Wholesale Lots
    Other
Construction
    Building Materials, Supplies
    Buildings, Modular & Pre-Fab
    Construction Equipment
    Mining Equipment

Office Products

Presentation, AV, Projectors

Presentation, AV, Projectors Article

takes a video signal and projects the corresponding image on a projection screen using a lens system. All video projectors use a very bright light to project the image, and most modern ones can correct any curves, blurriness, and other inconsistencies through manual settings. Video projectors are widely used for conference room presentations, classroom training, and home theatre applications.

A video projector may also be built into a cabinet with a rear-projection screen (rear-projection TV, or RPTV) to form a single unified display device, now popular for .home theater. applications.

Common display resolutions for a portable projector include SVGA (800×00 pixels), XGA (1024×68 pixels), 720p (1280×20 pixels), and 1080p (1920×080 pixels).

The cost of a device is not only determined by its resolution, but also by its light output, acoustic noise output, contrast, and other characteristics. While most modern projectors provide sufficient light for a small screen at night or under controlled lighting such as in a basement with no windows, a projector with a higher light output (measured in lumens, abbreviated .lm.) is required for a larger screen or a room with a higher amount of ambient light. A rating of 1000 to 1500 ANSI lumens or lower is suitable for smaller screens with controlled lighting or low ambient light. Between 1500 and 3000 lm is suitable for medium-sized screens with some ambient light or dimmed light. Over 3000 lm is appropriate for very large screens in a large room with no lighting control (for example, a conference room). Projected image size is important; because the total amount of light does not change, as size increases, brightness decreases. Image sizes are typically measured in linear terms, diagonally, obscuring the fact that larger images require much more light (proportional to the image area, not just the length of a side). Increasing the diagonal measure of the image by 25 % reduces the image brightness by 35 per cent; an increase of 41 per cent reduces brightness by half.

Presentation, AV, Projectors Items

1 2 3 4 5 6 7 8 9 10

Search:  
Tripod Projection Screen 70x70-PERFECT FOR PRESENTATION

$88.00
Digital Projection HighLite 6000DSX

$2000.00
Magnetico 16" X 20" Magnetic Dry Erase Board With Perso

$0.99
Western safety 25 WATT SAFETY SIREN MEGAPHONE-New

$19.99
D-LINK DPG-2000W 802.11G Wireless Presentation Gateway

$44.99
SHURE TELECONFERENCE SYSTEM ST6008 TYPE 2 MIXER

$14.00
Xenon 35 mm Projector

$225.00
Tripod Projection Screen 70x70-PERFECT FOR PRESENTATION

$88.00
3M 9700 OVERHEAD PROJECTOR DUAL BULB 4300 LUMENS

$41.00
LASER POINTER PEN ~ BLACK FINE POINT ~ WITH FREE BONUS!

$3.99
Elmo HV100XG XGA Visual Presenter

$102.50
NEW 30 WATT MEGAPHONE BULLHORN HORN SPEAKER SIREN MUSIC

$15.68
DA-LITE 70x70 HIGH GAIN (2.5) TRIPOD PROJECTOR SCREEN

$110.19
Colonel 500 PA System (Cordless)

$36.00
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806

$14.28
Buhl 2900 Office School Overhead Projector Model 2963

$9.99
MEGA PHONE MEGAPHONE BULL HORN BULLHORN SPORTING EVENT

$2.79
Vintage School Dukane Model 300 Slide Film Projector

$9.99
3M Overhead Projector with Case SALE NEW

$199.99
s 2 NEW APOLLO TRANSPARENCY MOUNTING FRAMES 342-1003B

$19.90
110" 4:3 High Gain High Contrast Projector Screen Black

$219.99
New 92" 16:9 HD Projector Projection Screen

$50.00
105 Fixed Frame Projector Screen 2.35:1 Gray Fabric

$219.99
NEW ELECTRIC MOTORIZED PROJECTOR SCREEN 84" 4:3 NR!

$41.00
Dukane Model 4000 Professional Overhead Projector SALE

$99.99
50" Plasma Case HEAVY DUTY 3/8" Plywood - Carpet Lined

$269.00
120" 4:3 Electric Motorized Projector Screen Gray

$325.98
100 Fixed Projector Screen Silver Frame 4:3 White Fabri

$263.98
Sony VPL-PX20 Projector

$420.00
30W Megaphone:Safety Siren:Music:Speaker Mic.- Bullhorn

$9.99
Lavalier Microphone Lapel Mini Tie Clip Mic

$9.99
3M 9100 Overhead Projector

$14.99
Tripod Projection Screen 70x70-PERFECT FOR PRESENTATION

$88.00
DA-LITE 84x84 PORTABLE TRIPOD PROJECTOR SCREEN NEW

$103.55
Proxima InFocus 200w Projector Lamp-016, DP9240 DP9260

$90.99
LOT 23 Old Stock Projection Bulbs, overhead projector,

$9.99
Expo Organize It! Dry Erase Board w/ 6 Accessories-Rare

$9.99
Porta Scribe School OverHead Still Projector G-100

$9.99
92" 16:9 HDTV Electric Motorized Screen Gray Fabric

$199.98
250 IBM Color Laser Printer Transparency Film Sheets!

$45.95
250 IBM Color Laser Printer Transparency Film Sheets!

$45.95
Tripod Projection Screen 80x80-FACTORY SEALED N STOCK

$98.00
Mitsubishi VLT-XL1LP Projector Bulb BRAND NEW

$102.50
New Lexmark Overhead Transparencies for Laser Printer

$3.26
42" PLASMA SCREEN TRAVEL/SHIPPING CASE! - NEW!

$159.00
Porta-Desk 6 DRAWER PORTABLE WORKSTATION CASE w/Wheels!

$69.95
Wireless Presentation Remote Powerpoint Laser Pointer

$34.99
New BOONE JUMBO EASEL+flip chart holder aluminum rg$137

$0.99
3M OVERHEAD PROJECTOR MODEL 522 OVER HEAD

$10.50
AverMedia AverKey Plus - VGA to TV Converter

$0.99
BLUE BEAST HI-OUTPUT AAA BATTERY RED BEAM LASER POINTER

$6.99
Tripod Projection Screen 70x70-PERFECT FOR PRESENTATION

$88.00
LOUD MINI MEGAPHONE ~ PORTABLE MEGA PHONE NEW

$9.95
Dukane Overhead Projector #632 bulb changer +spare lamp

$35.00
PORTABLE MEGAPHONE w/LOUD SIREN w/MICROPHONE ~500 FOOT~

$15.99
EXTRON SYSTEM 10 PLUS PROJECTOR AUDIO CONSOLE RS 232

$19.99
EIKI LC-330 LCD COLOR VIDEO PROJECTOR 140 ANSI LUMENS

$9.99
IKEA Magnetic Dry Erase Board + 8 Magnets Presentation

$16.95
MEGAPHONE 30 WATT W/ MICROPHONE ~ SPORTING BULL HORN

$7.99
Tripod Projection Screen 70x70-PERFECT FOR PRESENTATION

$88.00
3M 9700 Overhead Projector with Cover - 4300 Lumens

$149.00
10W Megaphone / Bullhorn Music & Speaker Mic. -BULLHORN

$9.41
Tripod Projection Screen 80x80-FACTORY SEALED N STOCK

$98.00
NEW SHARP PROJECTION SCREEN 39" x 52"

$5.50
30W Megaphone:Safety Siren:Music:Speaker Mic.- Bullhorn

$9.99
DA-LITE OVERHEAD PROJECTOR MODEL G-200 W/BULB GREAT

$14.99
3M OVERHEAD PROJECTOR 120 VOLT 60 HZ 4.5 AMP 360 LAMP W

$39.00
SHARP COMPUTER PROJECTION PANEL QA-1650 IN CASE EXTRAS

$15.50
Electric Projection Screen

$200.00
InFocus LP1200 Projector Used

$125.00
NEW QUARTERT EURO PLUS MAGNETIC ERASE PORCELAIN BOARD

$125.00
3M Model 567 Overhead Projector

$39.99
AV Audio Visual CART SteelCase Multi Media Projector

$59.99
3M 9100 Overhead Projector - 2800 Lumens

$69.00
Tripod Projection Screen 70x70-PERFECT FOR PRESENTATION

$88.00
Elmo EV-500AF Visual Presenter

$469.00
KODAK III AT AUTO FOCUS SLIDE PROJECTOR TRAY/REMOTE

$60.00
NAME BADGE LABELS 3.375" X 2.33" LABEL :313806

$14.28
MEGAPHONE - 25 WATT + SIREN + SPEAKER HANDSET !!LOUD!!!

$4.99
Elmo EV-500 Video Visualizer Presenter Document Camera

$219.00
MEGAPHONE - 25 WATT + SIREN + SPEAKER HANDSET !!LOUD!!!

$4.99
3M Model 1700 Overhead Projector

$45.00
AUCTIONEER'S POWERFUL PORTABLE BATTERY PA WIRELESS MIC

$499.95
Sim2 HT250 H. T. Multimedia Projector Top Award Winner

$500.00
Projector: Viewsonic PJ550 (Used)

$450.00
Apollo Overhead Projector School Office Church Supply

$9.95
250 IBM Color Laser Printer Transparency Film Sheets!

$45.95
C57i- 3M 910 Overhead Projector

$1.25
60" PLASMA SCREEN TRAVEL/SHIPPING CASE! - NEW!

$199.00
3M Overhead Projecter 9100 2800 Lumens w/WRNTY

$29.95
Wireless Presentation Remote Powerpoint Laser Pointer

$34.99
FANON SOLID MEGAPHONE MODEL MV-20S 1000 YARD RANGE

$4.99
MEGAPHONE 30 WATT W/ MICROPHONE ~ SPORTING BULL HORN

$7.99
Tripod Projection Screen 70x70-PERFECT FOR PRESENTATION

$88.00
95 Gray FIXED FRAME PROJECTOR SCREEN 16:9 WIDESCREEN

$199.98
NEW DALITE 84x84 GB 2.5 GAIN TRIPOD PROJECTOR SCREENS

$119.98
LOUD MINI MEGAPHONE ~ PORTABLE SIZED MEGA PHONE

$0.99