How a wireless mouse works

Wireless mouse operation

Most wireless mice interact with the computer using RF communication, which requires such components like the receiver and transmitter. With a built-in transmitter, the mouse transmits electromagnetic radio signals reporting information about pressed buttons and mouse movements. The receiver connects to the computer, receives mouse signals and transmits them to the operating system with the wireless mouse driver.

The receiver can be either built-in or separate device, connected to the computer as a special card inserted into the expansion slot.

The same principle of action is used by many electronic devices — cell phones, wireless networks, garage drives doors, remote controls and so on. However, unlike the infrared communication on which these devices operate, RF communication does not require the mouse and receiver to be at an accessible distance from each other. The gadget transmitter signal easily passes through obstacles in the form of a computer monitor or countertop.

Synchronization of the wireless mouse

As in most modern computer mice, wireless models use in their work not a ballpoint, but an optical system that significantly improves the accuracy of the gadget. In addition, the optical system allows the user to apply a wireless mouse on almost all surfaces, which is very important for a device that is not connected to a computer cable at least for a while.

Another advantage of radio frequency communication is the minimum energy cost of radio transmitters and receivers, which also weigh little, are inexpensive and can run from batteries.

Synchronization of the wireless mouse is needed for interaction of its transmitter with the receiver, which must run on the same channel, which is totality of identification code and frequency. Synchronization prevents interference caused by other wireless devices and foreign sources.

Each manufacturer equips its own wireless mouse — some models (more expensive in the overall rating) are sold already synchronized, and some need to automatically sync by clicking specific buttons on the device. The data transmitted by the mouse to the receiver is protected by encryption mechanisms or frequency hopping technology.

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