%20in%20computer%20graphics.jpg "cathode ray tube (CRT) in computer graphics")
Cathode Ray Tube (CRT) In Computer
Graphics | Advantage and Disadvantages
This is
a vacuum glass tube capable of converting a computer’s electrical signals into
variable images at high speed.
%20In%20Computer%20Graphics%20-%20Advantage%20and%20Disadvantages.jpg "Cathode Ray Tube (CRT)")
In CRT,
when the cathode is heated it emits electrons which after passing through the
focusing and deflection plats gets a strike on the phosphor-coated screen and as
the electron strikes the screen they give their energy to the phosphor, which causes
a few photons to be generated, and results in our seeing a spot on the CRT’s
face.
Advantages of Cathode Ray Tube (CRT)
1) High
resolution and fast response.
2) a Large number of colors.
3)
Inexpensive technology.
4) Wide
angle, high contrast, and brightness.
Disadvantages of Cathode Ray Tube (CRT)
1) It
is physically large and heavy.
2) High
power consumption.
3)
Geometrical errors at the boundary edges.
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