Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
Features of Optical Mouse
In order to overcome the disadvantages of the purely mechanical mouse with low precision and easy wear and tear of the mechanical structure, Logitech successfully designed the first optical mechanical mouse in 1983, which is generally referred to as "optical mouse". The optical mouse is improved on the basis of pure mechanical mouse, and the positioning accuracy of the mouse is improved by introducing optical technology. Like the pure mechanical mouse, the optical mouse also has a small glue ball and is connected to the X and Y shafts. The difference is that the optical mouse no longer has a circular decoding wheel, but two A grating code wheel with grating slits, and light-emitting diodes and photosensitive chips are added. When the mouse moves on the desktop, the rolling ball will drive the two grating code discs of the X and Y shafts to rotate, and the light emitted by the X and Y light-emitting diodes will illuminate the grating code disc. At the right time, the light emitted by the diode can be directly irradiated on the detection head composed of two photosensitive chips through the grid slit. If an optical signal is received, the photosensitive chip will generate a "1" signal, and if no optical signal is received, it will be set as a signal "0". Next, these signals are sent to a special control chip to generate the corresponding coordinate offset to determine the position of the cursor on the screen.
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