Structure of USB Device

The USB device follows a tree structure. USB stands for Universal Serial Bus, and it is a standard interface that is used to connect different types of peripherals to a computer. The USB device follows a hierarchical structure that is based on the concept of a tree.

Root Hub

The root hub is the top-level hub that is connected to the computer's USB port. It is the starting point of the USB device tree. The root hub is responsible for managing all the other hubs and devices that are connected to the USB port.

Hubs

The hubs are the intermediate nodes in the USB device tree. A hub is a device that allows multiple USB devices to be connected to a single USB port. The hub has multiple downstream ports that can be used to connect other devices.

Devices

The devices are the leaves of the USB device tree. These are the actual peripherals that are connected to the USB port. Examples of USB devices include keyboards, mice, printers, and storage devices.

Endpoints

Endpoints are the points of communication between the USB device and the host computer. Endpoints can be either of two types: IN or OUT. IN endpoints are used for data transfer from the device to the host, while OUT endpoints are used for data transfer from the host to the device.

Conclusion

In conclusion, the USB device follows a tree structure, with the root hub as the starting point and the devices as the leaves. The tree structure allows multiple devices to be connected to a single USB port, making it a versatile interface for connecting different types of peripherals to a computer.