We want to clarify three things MouseThe knowledge points are also the three main parameters that determine the performance of the mouse:

Mouse CPI (DPI) gear

    一、Sampling Rate

    Regarding the sampling rate of the mouse, there have always been two terms, DPI and CPI. More intuitively, it reflects the sensitivity of the mouse. DPI (Dots Per Inch) is the number of pixels per inch, and CPI (Counts Per Inch) is the number of measurements per inch. Logically speaking, the latter is a measure of mouse performance. It refers to the number of instructions sent back to the computer for each  1 inch when the mouse moves on the plane. However, the definition of DPI by mouse manufacturers is not a classic definition, but refers to "the number of points moved by each displacement signal". That is to say, the DPI in the mouth of the mouse manufacturer is actually equivalent to CPI, so you can compare these two The English abbreviations are regarded as different names with the same reality.

    At present, the higher the DPI, the more expensive the mouse, but a high-DPI mouse can hardly display performance on a low-resolution monitor. Take a 1000DPI mouse as an example. When the mouse moves one inch on the desktop (25.4mm equivalent to the metric unit), the mouse cursor can move 1000 pixels on the screen. If the user monitor resolution is 1920×1080, the user needs to be on the desktop Move the mouse up to a distance of 2 inches (approximately 51mm) to move the mouse from the far left to the far right of the screen.

    If you want a high-end mouse to play its due performance, you need to be equipped with a 4K or 8K monitor.

Adjustable switch on the bottom of the mouse

    二、response rate.

    The return rate is the value that the mouse MCU (micro control unit) processes the signal and then feeds it back to the host. Its unit is Hz. For example, if the return rate is 125Hz, you can simply think that the MCU sends data to the computer every 8ms; 500Hz is sent every 2ms. The return rate is a mouse performance parameter that gamers attach great importance to. In theory, a higher return rate can give play to the performance of the mouse, which is more practical for gamers. The USB return rate that we commonly use in mouse advertisements refers to this .

The original PAN3507 engine can reach a refresh rate of 4000FPS

    三、Refresh rate。

    The refresh rate is the parameter value that the optical engine of the mouse feeds back to the mouse MCU (micro control unit), and its unit is FPS (frames per second). From a definition point of view, it refers to the number of times the mouse CMOS imaging chip is imaged per second. Generally speaking, it means the number of times the mouse optical engine connects to the bottom of the mouse to take pictures within one second. For example, the traditional Optical mouseThe sampling rate can reach 3000 frames per second, which means it can sample and process 3000 shadow images in one second . A mouse with a high refresh rate can ensure that the mouse does not drop frames under high-speed motion.

    Edit summary:

    After reading this article, I believe that the audience has a certain understanding of optoelectronics and laser engines. In the back we have reduced to the three main parameters to be concerned about when buying a mouse. Of course, you must first consider the grip before spelling the parameters. No matter how strong the performance of a mouse is, it feels like a chicken rib, and it is tasteless, and it is a pity to discard it.