Hardware Electronic presentations use either a LCD panel or projector unit to project the image. An LCD panel is used in conjunction with an overhead projector. To achieve a quality projected image a bright overhead projector with a minimum output of 4,000 lumens and 460 watts is recommended. Keep in mind, an image on the computer monitor can look totally different once projected. The quality of the output device is determined by the resolution of the panel or projector.
Higher resolution results in better image quality.
Another potential problem with hardware is compatibility and failure. Some presenters choose to take both their laptop and projection device with them to avoid potential compatibility problems. Even though the equipment may have worked just five minutes ago, when it is time for the presentation, the equipment may fail, but that is no excuse for a poor presentation. If the equipment fails, immediately transition to your back up plan. Finally, the guideline to keep in mind when selecting a laptop for electronic presentations is the greater the media, the more computer power is needed.