Input refers to the information or data that is entered into a system for processing. This can include text, numbers, images, or any other type of data that a user provides. For example, when you type a query into a search engine like Google, the words you enter are considered input. The quality and accuracy of the input can significantly affect the output or results generated by the system. In computing, input can come from various sources, such as keyboards, mice, touchscreens, or sensors. Each of these devices allows users to interact with software applications or hardware systems. For instance, a microphone captures audio input, enabling voice recognition software to process spoken commands.