Form input refers to the various fields and elements within a digital form that allow users to enter information. Common types of form inputs include text boxes, checkboxes, radio buttons, and dropdown menus. These elements are essential for collecting data from users, such as names, email addresses, and preferences. When users fill out a form, they interact with these input fields to provide the requested information. This data can then be processed and stored by web applications, enabling functionalities like user registration, feedback submission, and online purchases. Proper design and validation of form inputs enhance user experience and data accuracy.