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However, the limited amount of information which can be displayed on a HUD
or HMD is no substitute for the far more detailed information available from the
cockpit-mounted instruments. This led to the concept of the integrated cockpit. In
addition to a standard HUD, the integrated cockpit usually consists of three multi-
function displays which replace many of the traditionally singly-mounted
instruments, displays, subsystem indicators, dials and gauges. The displays resemble
TV screens on which the desired information can be called up according to need. The
screens are full-color cathode ray tubes which provide on request any information
and data available to the aircraft's central computer.
