What is a common input device that allows data and instructions to be typed into a computer?

A keyboard is an essential input device that enables users to enter data and instructions into a computer. It consists of a set of keys that represent letters, numbers, and various functions, allowing for a direct textual input method. This functionality is crucial for tasks such as writing documents, programming, or executing commands, making it a fundamental tool in computer operation.

In contrast, a mouse serves as a pointing device that allows users to interact with graphical elements on the screen rather than inputting text directly. A scanner is used for digitizing physical documents into digital format, while a monitor is an output device that displays visual information from the computer. Each of these devices serves different purposes, but the keyboard specifically focuses on text and instruction input, solidifying its role as a primary component in human-computer interaction.