HID
HID (Human Interface Device) is a type of computer device that interacts directly with, and most often takes input from, humans. HID devices include a variety of peripherals such as keyboards, mice, game controllers, and other input devices. The term HID most commonly refers to the USB-HID standard, which was developed to simplify the process of connecting and using input devices with computers.
Overview[edit | edit source]
The HID standard was created by the USB Implementers Forum (USB-IF) to provide a standardized way for devices to communicate with a host computer. This standard allows for the easy integration of input devices without the need for specialized drivers. HID devices are recognized by the operating system and can be used immediately upon connection.
Types of HID Devices[edit | edit source]
HID devices encompass a wide range of peripherals, including but not limited to:
HID Protocol[edit | edit source]
The HID protocol is designed to be flexible and extensible. It uses a descriptor-based approach, where the device describes its capabilities to the host. This allows the host to understand the data format and the type of input the device will provide. The HID descriptor is a structured data format that includes information about the device's capabilities, such as the number of buttons on a mouse or the layout of a keyboard.
USB-HID[edit | edit source]
The USB-HID standard is a subset of the broader HID standard and is specifically designed for devices that connect via USB. USB-HID devices are widely used due to their plug-and-play nature and broad compatibility with different operating systems.
Applications[edit | edit source]
HID devices are used in a variety of applications, including:
Advantages[edit | edit source]
The main advantages of HID devices include:
- Ease of use: HID devices are typically plug-and-play, requiring no additional drivers.
- Compatibility: HID devices are supported by most modern operating systems.
- Flexibility: The HID protocol can be used for a wide range of devices and applications.
See Also[edit | edit source]
Related Pages[edit | edit source]
- Keyboard
- Mouse (computing)
- Game controller
- Joystick
- Touchscreen
- Barcode reader
- Fingerprint scanner
- Universal Serial Bus
- Peripheral device
- Input device
- Human-computer interaction
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