Multiple choice

The display elements of various colours are supported by -------------------.

  1. a quantum dot display

  2. a swept-volume display

  3. electroluminescent displays

  4. a vacuum fluorescent display
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A vacuum fluorescent display (VFD) is a display device used commonly on consumer-electronics equipment such as video cassette recorders, car radios and microwave ovens. VFD emits a very bright light with high contrast and can support display elements of various colours. VFD's can display seven-segment numerals, multi-segment alpha-numeric characters or can be made in a dot-matrix to display different alphanumeric characters and symbols.

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