Organic light emitting diode (OLED) technology is used in which of these devices? A. scanners B. printers C. digitizers D. displays

Which of the following uses organic molecules that produce a brighter, easier-to-read display than standard TFT displays?a.OLEDb.ACMc.CRTd.plasma technology

The light from an OLED device is produced by the:A.excitation of an electron to a higher energy level.B.absorption of a high-energy photon.C.emission of a positron associated with the relaxation of an electron.D.emission of a photon associated with the relaxation of an electron.

2. Which mobile device screen technology uses no backlight?A. BYODB. LCDC. LEDD. OLED

Write short notes on the working principle of OLED.

Which of the following is a primary output device of a graphics system? A. Video monitor B. Printer C. Neither Scanner nor Video monitor D. Scanner