The first computer mice appeared more than 50 years ago. They were then optical-mechanical: their position on the screen was determined using a ball and two rollers. Such manipulators were quite inconvenient, had little accuracy and often broke. With the development of technology, optical mice replaced them. Their principle of operation is based on multiple photographing of the surface and
comparing the data. The results of the comparison determine the direction and speed of movement. Optical mice have a characteristic red backlight, which is used to increase the efficiency of the sensor element. One of the varieties of the optical manipulator is an infrared sensor. These are already slightly different technologies, speed and accuracy of cursor movement. To date, the
optical mouse has simply transcendental, in comparison with the "ancestors", characteristics.
The parameter that displays the accuracy of the manipulator and the speed of its movement on the screen is called the DPI of the mouse. It shows how many dots per inch (2.54 cm) this device can detect (count). Therefore, the higher this value, the higher the accuracy of the cursor. The use of a laser sensor element allows you to make surface pictures very contrasting. This allows you to increase the DPI of the mouse several times. If, when using an optical element, the maximum was 1800, then modern models using a laser can already have up to 5600. Do you need such values? Decide for yourself, in this matter, the main thing is to decide what you are buying the mouse for. DPI at 5600 makes it possible to overclock
a manipulator up to 2 meters per second, which means that it is with this speed that the cursor will move on the screen. If this is what you need, buy a mouse with these parameters.
Increasing the accuracy of pointing is good, but there is one “but”: with increasing accuracy, the speed of movement of the marker on the screen also increases. This is inconvenient when working with office programs, unsuitable for graphic editors, etc. For work in office programs, the optimal DPI of the mouse ranges from 400 to 800. At high speeds, significant muscle tension is required, and the arm gets tired much faster.
Mice with high DPI values are needed for computer games. It is thanks to the increased speed requirements in modern "entertainments" that
manipulators have evolved so rapidly. After all, it requires a high speed of cursor movement on the screen, and high accuracy of its guidance.
For those who work in office programs and like to relax with the help of games, there are models that can change parameters. The mode and DPI value of the mouse is changed by pressing a special button under the scroll wheel. Most often, this parameter varies from 200 to 3600. There are several operating modes. In order to be able to control the current DPI of the mouse, it is possible to change the color of the backlight. This function is configured using special programs.
If before, special attention was not paid to the choice of mice (they were all about the same), today a huge number of different models have appeared that are more comfortable, accurate or have some other features. Another thing is that it is possible to understand whether this modification is convenient for you only after a few days of work. But remember that, by law, you can exchange goods or return money within 14 days. The main thing is to keep the presentation, all documents and packaging.