The formula for calculating the speed of the LED display is as follows: Visible Pixel Rate (VPR) = Refresh Rate (Hz) x Width (cm) / Height (cm) Among them, Visible Pixel Rate (VPR) represents the pixels scanned per second on the visible screen Refresh Rate (Hz) indicates the refresh rate of the screen per second, Width (cm) indicates the width of the screen, and Height (cm) indicates the height of the screen. For example, if the screen width of an LED display is 10 cm, the height is 20 cm, and the refresh rate per second is 60 Hz, then its Visible Pixel Rate (VPR) is: VPR = 60 Hz x 10 cm / 20 cm = 3 Hz Therefore, the visible screen of this LED display scans 3 pixels per second. Note that the calculation here is based on the Visible Pixel Rate (VPR) of the display screen, but in fact the scanning speed of the LED display screen may be affected by other factors, such as the characteristics of the LED lamp bead, signal transmission, etc.