What is the full form of HID?

Introduction

Human Interface Device (HID) is a type of computer device. It authorises humans to interact with a computer system or a method to interact with an electronic device. Some HID devices are responsible for generating inputs and some are responsible for generating outputs.

Examples of some HIDs are touchpads, game controllers, joysticks, keyboards, and stylus pens. The primary aim of an HID is to deliver a user-friendly way for humans to input data and receives feedback from the system. The output can be audio, visual and haptic

HIDs can either be wired or wireless and they demand little or no configuration. HIDs are considered crucial for many types of computer applications because they are needed for everyday tasks like typing and browsing the internet, gaming, and medical data entry.

Functionality of HID

The functionality of an HID device relies on its design and objective. HIDs allow users to input information into a computer and control the device's output. For example, a gamepad allows users to control characters in a video game, a keyboard allows users to input text into a computer, a mouse allows users to control the movement of a cursor, whereas a touchscreen allows users to interact with the device directly by using gestures.

HID devices are connected to a computer or other devices via a USB or Bluetooth. The computer system processes these signals and generates output signals. These output signals can be of various types i.e. visual feedback, such as displaying an image on a screen, or audible feedback, such as playing a sound.

The HID protocol gives a standardised way of communicating between the device and the computer system. It allows HID devices from different manufacturers to be used with any computer system if it supports the HID protocol. HID devices can also be customised to provide additional functions besides basic input and output. For example, a touchscreen can also be used to provide a user interface for controlling an embedded system.

Types of HID

• Keyboard − A keyboard is an input device. It allows users to input characters, numbers and other symbols into a computer.

• Mouse − A mouse is an input device that allows users to move a cursor on a computer screen and select items by clicking buttons.

• Joystick − A joystick is an input device. It allows users to control the movement of a cursor on the computer screen. It is done by moving a stick in different directions.

• Gamepad − A gamepad is an input device that allows users to control video games by moving analogue sticks and pressing buttons.

• Touchpad − A touchpad is a pointing device that allows users to move a cursor on a computer screen by moving their fingers on a small pad.

• Speaker − A speaker is an output device that allows users to hear audio

• Display − A display is an output device that allows users to view images and video

• Digital camera − A digital camera is an input device that allows users to capture digital images and video.

• Trackball − A trackball is a pointing device. It allows users to move a cursor on a computer screen by rolling a ball with their fingers.

Conclusion

Human Interface Devices (HID) have changed the way of interacting with computers and other digital devices. From the basic keyboard and mouse to more advanced devices like touchscreens and game controllers. HID has made using computers efficient, and easy. HIDs are crucial because they allow us to interact with the digital world and improved our ability to communicate with digital devices.

FAQs

Q1. What is a gesture-based human interface device?

Ans: A gesture-based human interface device is a type of computer input device. It allows users to interact with a computer by making different hand or body movements. Some examples are waving, pointing, or swiping.

Q2. How do game controllers function as human interface devices?

Ans: Game controllers are human interface devices that allow users to control the movements and actions of characters in video games. For example, using a joystick to play the game.

Q3. What are some common types of human interface devices and what is a touchpad?

Ans: Some common types of human interface devices are keyboards, trackballs, gamepads, touchpads, joysticks, and digital pens.

A touchpad is a human interface device. It allows users to control the movement of the cursor on a computer screen by sliding their fingers across a flat surface.