Choosing Computer Accessories

6. Projectors

6.1 Projectors are used to display large images on a screen.

• You can connect them to your computer and use them for presentations.
• Some projectors can also be connected to DVD players and other sources of video.

6.2 A projector's brightness is measured in ANSI lumens.

• The higher the number, the brighter the image.
• Look for 1,200 ANSI lumens for a projector that works well in a dim room, 2,000 for use in a normal office environment, and 3,000 for use in brighter light.

6.3 You should also check a projector's resolution.

• The resolution is how many pixels make up the image the projector creates.
• The native resolution figure is most important. The higher this is, the more detailed the projected image.

6.4 Make sure your projector has the correct input ports, so you can connect your laptop or other equipment.

• Most projectors use a DVI or HDMI port to connect to computers.
• Older projectors may use a VGA connection.

6.5 Test a projector before buying.

• Check the image quality and brightness in the conditions you will be using the projector.
• Consider the size and weight of the projector. Will you be taking it to meetings?