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What is USB-HID Do you know

USB-HID is an abbreviation of Human Interface Device. Its name can be used to understand that HID devices are devices that interact directly with people, such as keyboards, mice, and joysticks. However, HID devices do not necessarily have a human interface, as long as the devices that meet the HID category specifications are HID devices.
The exchanged data is stored in a structure called a report report, and the device’s firmware must support the format of the HID report. The host transmits and requests reports in control and interrupt transfers to transmit and receive data. The format of the report is very flexible and can handle any type of data.
In addition to the HID interface, the device may also contain other USB interfaces. For example, the image display device may use the HID interface to perform brightness, contrast, and update rate software control, and use a conventional image interface to transmit data to be displayed. USB speakers can use real-time transmission to play voice, while using the HID interface to control volume, oscillating, and bass. HID interfaces are usually cheaper than traditional control interfaces.

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