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light pen 1 , n (↔ fr: crayon optique
)
a light pen: ~ used by user
1
Agent
to act on signal Patient

a light pen: ~ used by user
1
Agent
to act on signal Patient
Just like a light gun, a light pen works by sensing the sudden small change in brightness of a point on the screen when the electron gun refreshes that spot.
[
enLIGHT_PEN
]
Similarly, graphics tablets and light pens can be used to input these gestures, however these are less common everyday.
[
enKEYSTROKE_LOGGING
]
Since light pens operate by detecting light emitted by the screen phosphors, some nonzero intensity level must be present at the coordinate position to be selected.
[
enLIGHT_PEN
]
The user Agent uses a l. use a ~
français
crayon optique
KD CG MCLH
11/07/2011
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