The working principle of trackball positioning is actually similar to that
of grating, except that the motion mode of the roller is changed. The ball seat
is fixed, and the mouse arrow is controlled by moving the trackball by hand.
When the trackball is rolled, it drives the left and right and the upper and
lower sides of the roller, which is equipped with a grid wheel, and generates
pulse signals for positioning through the luminescent tube and the receiving
component. However, the track ball has a large roller volume and a long travel,
so this positioning method can make very accurate operation. In addition,
another advantage of trackball is stability, which can be controlled by one
finger and will not be affected by hand movements. In addition, the
photoelectric trackball is used, and its working principle is similar to that of
the luminescent secondary tube.
Seize the commanding heights and serve its global strategy. The Global
Positioning System (GPS) is one of the cores of modern high-tech weapons. It can
provide real-time, all-weather and global navigation services for the army, navy
and air forces, and is used for military purposes such as intelligence
gathering, nuclear explosion monitoring and emergency communications. The U.S.
military relies on the system for core capabilities such as missile defense,
long-range firepower, global strike, and special operations. Moreover, after the
free opening of the global positioning system, it is widely used in navigation,
positioning, timing, monitoring, rescue and other work in various industries.
The final control of the system is exclusively held by the United States, which
is one of the keys to the initiative of the United States in the global scope.
The United States will naturally seize the commanding heights.
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