Using the technology for the presentation
Overhead projections and slides allow audiences to see graphics or photographs more easily or to look at an outline of your main points while you are making them. They help listeners remain on track during long or complicated presentations. Business speakers often prefer overhead projections and slides to poster boards or flip charts because of their professional quality and adaptability. Most personal computers now come packaged with graphics software for the preparation and presentation of projections and slides. Projections are most useful for audiences of up to fifty people; for larger audiences, slides presented on large screens are better.
Overhead projections are popular because they are easy to make, inexpensive, and adaptable. Transparency projectors transmit an image from an acetate original. You can draw, print, or type your material on plain paper and convert it to a transparency on a copying machine. Transparencies are also one of the best ways to use computer-generated graphics. You can create transparencies directly through your computer printer. If you have access to a color printer, the transparencies can be quite professional-looking and dramatic. If you have only a black-and-white printer, once you have made your