Nintendo NES-001 User Guide - Page 32

Original NES Zapper light-gun [45]. - system manuals

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Figure 5-2. Original NES Zapper light-gun [45]. "The Zapper works by receiving the light from the screen. The contrast and brightness controls of the TV must be adjusted properly or the shots may not register. (The characters should be as bright as possible while the background areas should be as dark as possible.)" The above description of how the Zapper works is taken from the light-guns manual as quoted in [44]. Essentially, the Zapper works by measuring the intensity of the light at the point it is aimed at. When the system detects the trigger is pulled, it draws a white box around the sprites on the screen. The Zapper can then check the colour intensity and determine if it is pointed at a white area, which is a sprite, or a dark area, which belongs to the background. 32

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32
Figure 5-2. Original NES Zapper light-gun [45].
“The Zapper works by receiving the light from the screen. The contrast and
brightness controls of the TV must be adjusted properly or the shots may not
register. (The characters should be as bright as possible while the background
areas should be as dark as possible.)”
The above description of how the Zapper works is taken from the light-guns manual as
quoted in [44]. Essentially, the Zapper works by measuring the intensity of the light at the
point it is aimed at. When the system detects the trigger is pulled, it draws a white box
around the sprites on the screen. The Zapper can then check the colour intensity and
determine if it is pointed at a white area, which is a sprite, or a dark area, which belongs to
the background.