AExE02 · Chapter 2Theory of Computation & Graphics🏛️ Past Licensure QuestionID: a81ccef5
Which color CRT display technique uses a single electron gun and layered phosphors, with electron beam acceleration voltage controlling which color layer is excited?
Which color CRT display technique uses a single electron gun and layered phosphors, with electron beam acceleration voltage controlling which color layer is excited?
Multiple Choice Options
- A
Gas-Discharge method
- B
Direct View Storage
- C
Shadow-Mask method
- D✓ Correct Option
Beam-Penetration method
Detailed Technical Solution & Explanation
In random-scan (vector) monitors, the beam-penetration method uses two layers of phosphors (typically red and green). A slow beam penetrates only the red layer; a high-speed accelerated beam penetrates through to the green layer; intermediate voltages produce yellow and orange.
Option Analysis:
•
Option A (Gas-Discharge method): Plasma display technology.
•
Option B (Direct View Storage): DVST technology for flicker-free storage of vector images, monochrome.
•
Option C (Shadow-Mask method): Uses 3 electron guns for RGB in raster scan monitors.
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Option D (Beam-Penetration method): Correct. Layered phosphor method used in random-scan monitors.
Reference: Mock Test 03NEC Licensure Syllabus