18 Questions
What is a pixel in the context of a raster scan display technology?
A dot or picture element of the raster
Which type of device was the Direct View Storage Tube (DVST) from Tektronix?
Line-drawing device
What is the limitation of raster scan display technology mentioned in the text?
Limited color capability
What component of a Cathode Ray Tube (CRT) produces a narrow beam of high-velocity electrons?
Modulator
How is the intensity of the electron beam controlled in a Cathode Ray Tube (CRT)?
By variation of the potential of the cylindrical control grid
What does a refresh buffer in a raster scan display technology control?
Brightness of each pixel
In a CRT, what is used to control the intensity of the electron beam?
Phosphor screen
What is the function of the focusing system in a Cathode Ray Tube (CRT)?
To concentrate the electron beam to a small spot
Which part of a CRT allows passage of the electron beam?
Control grid
What improvement did the Direct View Storage Tube (DVST) bring to display technology?
Ability to draw complex images easily
What is the purpose of the phosphor screen in a CRT?
To emit light when struck by the electron beam
How does an electron gun control the intensity of the electron beam in a Cathode Ray Tube (CRT)?
By varying the negative potential at the control grid
What is the purpose of the deflection system in a Cathode Ray Tube (CRT)?
To deflect/direct the electron beam horizontally and/or vertically to any point on the screen
What type of fields are used to deflect the electron beam in a CRT?
Both magnetic and electrostatic fields
What happens when a high negative voltage is applied to the control grid of a Cathode Ray Tube (CRT)?
Electron passage is stopped
How are the different color shades produced in a color CRT?
By using three different phosphors, one for each primary color
What is the purpose of the focusing system in a CRT?
To focus the electron beam to the smallest possible spot on the screen
How is the intensity of the electron beam controlled in a CRT?
By adjusting the voltage applied to the accelerating anode
Explore the components of a Cathode Ray Tube (CRT), including the accelerating anode, focusing system, deflection system, phosphor screen, and electron gun. Learn about how high-velocity electrons are used to create a visible display on the screen.
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