The term Glass Cockpit refers to a modern cockpit in which all the round dialled electro-mechanical instruments have been replaced with Multi-Function Displays (MFDs) and a Head Up Display (HUD). A glass cockpit uses several displays driven by flight management systems, which can be adjusted to display flight information as needed. This simplifies aircraft operation and navigation and allows pilots to focus only on the most pertinent information. The MFDs are colour Active Matrix Liquid Crystal Displays (AMLCDs) Information required by the pilot to take-off, navigate, perform his operational mission, deliver his weapons, cope with enemy threats, return to base and land is gathered by sensors on board the aircraft, processed by a mission computer and then displayed on the MFDs and HUD.