TYPE IN is a term used to describe the process of entering data into a computer. It involves using a KEYBOARD or other input device to type in information, such as text, numbers, or commands. The most common way to type in data is to use a KEYBOARD, which is a device with keys that correspond to letters, numbers, and symbols. Another way to type in data is to use a mouse or other pointing device to ENTER information. Finally, some computers allow users to type in data using voice commands.