M5.11 Flashcards
Displays: What does CRT stand for
Cathode Ray Tube
Displays: How is deflection done in a CRT
Electrostatic means
Displays: What is the control grid used for in CRT
To control the flow of electrons down the tube
Displays: 1st and 2nd anodes in a CRT do what
Forms electrons Ito a beam
Displays: 3rd anode in a CRT does what
Focuses the beam of electrons onto the screen
Displays: In a CRT what is the screen coated in
Phosphor
Displays: CRTs in a TV have a final anode potential of what
25kv
Displays: In a CRT is the control grid positive or negative with respect to the cathode
Always more negative
Displays: Most common type used to deflect CRT beams of electrons
Electromagnetic deflection
Displays: How do oscilloscopes deflect the beam
Electrostatic deflection
Displays: How do CRTs produce colour pictures
By coating the screen with 3 different phosphors (Red Green and blue)
Displays: A delta gun uses what
A shadow mask
Displays: a sony Trenton CRT replaces a shadow mask with what
Aperture grille
Displays: The majority of aircraft CRT displays are of what form
Sony Triniton
CRTs: The electron beam deflected to give weather and artificial horizon give us what on screen
Raster
CRTs - What produces symbols on screen
Stroke scan
CRTs - What colour cannot be displayed if one colour fails
White images are no longer available
CRTs - If a system overheats what happens
Large consumers (raster scan) will shut down
CRTs - What temperature will cause the raster to shut down
70c
CRTs - what temperature will cause a complete shut down of the monitor
90c
CRTs - Advantage
Coloured multifunctional display
LEDs - What is resolution limited to
64 cells per inch
LEDs - operate on which principle
Electro Luminescence
LEDs - Two categories of displays
Character
Graphic
LEDs - Disadvantages
- Higher current consumption
- Limited flexibility
LEDs - What indicates the cathode
Flat area
LEDs - Two types of display formats
7 segment and dot matrix
LEDs - When is 7 segment used
Number and limited number of other symbols are needed
LEDs - Matrix size of a Dot matrix
5x7
LCDs - What do LCDs control
Light
Since LCDs do not radiate light what must they be used in
Light areas or with an active backlight
LCDs - How are the grooved plates aligned
90 degrees perpendicular to the bottom plate
LCDs - What segment appears bright in daylight
Light reflected by mirror
LCDs - Disadvantage
Temperature sensitive
LCDs - Advantages
Low Energy
Long lifespan
LCDs - What is the most common technology used for EIS
Active - Matrix Liquid Crystal Display (AMLCD)
Three units of a HUD
- Computer
- Projector
- Combiner
OLED advantages
Brighter colour
Screen can be read from the side
Thinner
More flexible
Lower power consumption
No backlight required
