For example, a computer based presentation can include text, graphics, video and sound. In addition to providing a single point for integrating these various medium, the computer provides a platform for easily storing, retrieving and modifying presentations. Building Presentations Presentations are built using a computer that has presentation software installed on it. The software is used to create a slideshow, where each slide is a type of electronic overhead transparency. The developer places objects on the slide that are to be displayed during the presentation.
Text is typed in on the computer keyboard.
Graphics, e.g. charts, graphs, can be developed on the computer or scanned from paper sources. Photographs can be scanned into computer files and placed on the slide. Digital video can be incorporated as well as digitized sounds. As many slides as necessary are added to the presentation. The environment allows the author to edit information on the slides, change the order of slides, set automatic or manual transition from slide to slide, set special effects and slide attributes, e.g. color, background, borders, etc.