| First of all, a screensaver is a software program to | | | | generally lower contrast than the stark green- or |
| prevent "Phosphor Burning" on a CRT and plasma | | | | white-on-black text and graphics of earlier machines. |
| computer monitors by blanking the screen or filling it | | | | LCD computer monitors, including the display panels |
| with moving images or patterns when the computer | | | | used in laptop computers, are not susceptible to burn-in |
| was not in use. | | | | because the image is not directly produced by |
| Good screensaver programs should have the | | | | phosphors (although they can suffer from a less |
| following features: | | | | extreme and usually non-permanent form of image |
| A dark background or scene: This is to save power | | | | persistence). |
| consumed by the display. | | | | They can be usually set up to launch automatically, |
| Moving objects or scene: This is to avoid pixel burn-in. | | | | waiting a specified amount of time after the last action |
| Fixed objects must be dark. | | | | made by a user. Then the screensaver switches the |
| Slow motion: The scene must be appeasing. | | | | image to black, or produces some animation effects, |
| Silent running: If you add sounds, use low-level ones | | | | slideshows, music,... |
| and/or music. | | | | How to install/ uninstall screensavers? |
| Sensitive: It must stop on any user action (mouse | | | | Most downloadable screensavers are delivered as a |
| move, clicking, keyboard typing,...). | | | | .exe file, only click on the file and it automatically |
| Modern CRTs are much less susceptible to burn-in | | | | installed on your PC, for uninstall, look an uninstall or |
| than older models due to improvements in phosphor | | | | remove option in the program or by clicking the start |
| coatings, and because modern computer images are | | | | menu, then all programs (or program files). |