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- text/10/5
- A pattern of control is applied.
- First, the beam is deflected
- to aim at the top left corner
- of the screen. Then it is moved
- from left to right. When it hits
- the right edge, it is turned
- off, and aimed at the left edge
- again, but a little bit lower.
- Then it is once again swept from
- left to right. This is repeated
- over and over again until the beam
- sweeps the bottom row from left to
- right. The whole procedure
- happens again and again 60 times a
- second.
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-
- text/7/140
- A monochrome picture is entirely
- composed of dots, so anywhere there
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- text/359/5
- is to be a dot, the gun is
- turned on during its sweep, and
- where the picture is supposed
- to be dark, it is turned off.
- The dots slowly fade out. But
- if the picture stays the same,
- they are relit when the beam
- comes across again. If the
- picture changes, a new pattern
- of dots are lit up.
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- text/356/96
- If you have a CGA monitor,
- the graphics resolution is 640
- dots across by 200 vertically.
- Each sweep of the gun can
- light up any of 640 locations
- from left to right. The gun
- makes a total of 200 sweeps
- working from top to bottom.
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- text/311/88
-
- ~