A computer display, monitor or screen is a computer peripheral device capable of showing characters and/or still or moving images generated by a computer and processed by a graphics card. Monitors generally conform to one or more display standards

The different hardware technologies exist for displaying computer-generated output:

• Cathode ray tube (CRT)
• Liquid crystal display (LCD). [LCD-based monitors can receive television and computer protocols (SVGA, PAL, SECAM; NTSC).)
• Plasma display
• Surface-conduction electron-emitter display (SED)
• Video projector

A VGA connector is a three-row DE-15 (also called mini sub D15) connector for use with a VGA, SVGA, or XGA monitor. A smaller connector, called Mini-VGA is used for laptops.