Playing in a dark environment depends more on the brightness of the playing environment. Therefore, to achieve the best results, we should pay attention to the content of the presentation. PPT presentation can be played in a bright environment, and the contrast between the text and the background is weaker (softer), so that the audience can see it clearly.

It is through demonstration that the audience can understand the content of your demonstration. The adjustment of background tone and text color depends on the playing environment, and the contrast between text and background should be stronger (dazzling) to see clearly. Playing the same presentation in different brightness environments will produce different effects, which cannot be generalized. The colors of background and text will be adjusted accordingly in different environments.

It is mainly used to design and produce electronic slides of advertisements and product demonstrations, and the produced presentations can be played through computer screens or projectors.

Using PowerPoint, Keynote or OpenOffice, you can not only create a presentation, but also hold a face-to-face meeting, a network conference call or show the presentation to the audience on the network. With the popularization of office automation, PowerPoint and Keynote are widely used.

In PowerPoint, there are still some differences between presentations and slides. What PowerPoint makes is called a presentation, which is a file.

Each page in a presentation is called a slide, and each slide is an independent and interrelated content in the presentation. It can be used to express the content more visually, and charts and words can be presented clearly and quickly. You can insert rich content, such as pictures, animations, notes and handouts.