Definition

Noun: 1. A computer program or animation: A screen saver is a program that activates automatically on a computer monitor after a period of user inactivity. Its primary historical purpose was to prevent screen burn-in (a permanent discoloration or ghost image) on older cathode-ray tube (CRT) monitors by displaying a moving image or pattern. 2. A protective or decorative display: It is a moving design, animation, or slideshow that appears when the computer is not in use, originally to protect the screen and now often for decoration or security.

Usage and Examples

• Basic Usage: A screen saver starts when the computer is idle.
  • My computer is set to activate the screen saver after five minutes of inactivity.
  • The flying toasters were a popular screen saver in the 1990s.
• Functional Context: It is used to describe a feature in display settings.
  • You can change your screen saver in the system preferences.
  • I use a photo slideshow as my screen saver.

Advanced Usage

• Security Function: Modern screen savers can be configured with a password, turning the display into a simple security lock when activated.
  • For security, enable the option to require a password when the screen saver dismisses.
• Technical Distinction: It is important to distinguish a screen saver from simply turning off the display or putting the monitor to sleep, which is a more common power-saving practice today.

Variants and Related Words

• Screen Saver Program/Utility: A more formal term specifying it is a type of software.
• Desktop Background/Wallpaper: This is a static image displayed behind icons, which is different from a moving screen saver that activates during inactivity.
• Sleep Mode/Display Power Off: These are power management states that turn the screen off completely, which has replaced the screen-protection need for screen savers on modern LCD/LED monitors.

Synonyms

• Display saver (less common)
• Screen blanker (a specific, simple type of screen saver that shows only a black screen)

Related Phrases

• To set a screen saver: To configure and enable a screen saver.
  • I need to set a screen saver on my office computer.
• Screen saver settings: The menu or control panel where one configures the screen saver.
  • The screen saver settings allow you to choose the wait time.

Noun

1. (computer science) a moving design that appears on a computer screen when there has been no input for a specified period of time
   • screen savers prevent the damage that occurs when the same areas of light and dark are displayed too long