User input refers to the information or commands that a person provides to a computer or software program. This can include typing on a keyboard, clicking a mouse, or using touch gestures on a screen. Essentially, user input is how we communicate our needs and instructions to technology, allowing it to perform tasks or provide information. In many applications, such as web browsers or mobile apps, user input is crucial for functionality. For example, when you search for something online, the words you type into the search bar are your input, guiding the search engine to deliver relevant results.