Special Features:

The design life of the numeric indicator shall be in excess of 100, 000.0 hours of operation; the end of life criteria being when the brightness is down fifty percent from its original value

Properties:

An indicator which displays incremental information derived from discrete electronic signals from another item, such as a computer, on the face of a cathode ray tube, or by means of gaseous discharge type lamps which are part of a decade counting device. The displayed data may be in the form of letters, numerals, symbols, or any combination thereof. For liquid crystal displays or semiconductor type, see also display, optoelectronic. Excludes annunciator and alarm (as modified). See also counter, electronic, digital; indicator, symbol indicating; and voltmeter.