A computer mouse is an input device for entering information into a computer. Computer mice, like keyboards, are available as wired and wireless.
A wired and wireless mouse adapter plugs into the USB port.
Principle of operation
The device tracks its movement on the working surface with a movement sensor and transmits the movement information to the computer's operating system. The operating system makes the cursor move. The keys on the mouse drive a context menu, activate a specified feature, or scroll through web pages.
Keys
1 – The right button. It reveals a context (additional) menu that provides additional actions.
2 - Scroll Wheel. It allows you to scroll up or down files of different formats.
3 - The left button. It is used to open documents and launch programs.
4 and 5 - Auxiliary buttons. The mouse may have auxiliary (side) buttons for convenient work and games.
Types
Optical Laser Mouse
This mouse uses a type of optical sensor that applies a semiconductor laser. The laser emits light in the infrared range. The sensor in the mouse picks up the wavelength of the reflected light, which varies depending on the surface.
Optical LED Mouse
This mouse has an optical sensor (camera) with a small resolution sensor. It contains a light source (LED) and two lenses. The LED is structurally mounted at an angle to the working surface. A CMOS sensor receives the reflected beam. According to the comparison of different consecutive pictures by the sensor, it is concluded about the movement of the mouse. Based on these signals, the processor realizes in which direction to move the cursor on the monitor screen.
Gyroscopic Mouse
These mice include a gyroscope that detects movement on the mouse pad and in space.
Induction mouse
These mice use a special pad that operates on the principle of a graphics tablet. The mouse emits electromagnetic waves and the mousepad acts as a receiver. This is how the mouse interacts with the mat.
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