A ______ is the most commonly used input device.
A keyboard is the most commonly used input device. It allows users to input text, commands, and other types of data into a computer.
To come to this conclusion, we can start by thinking about common actions performed on a computer. One of the most common tasks is typing, whether it's writing documents, sending emails, browsing the internet, or even playing games.
Next, we can consider the widespread adoption of keyboards. Keyboards are included with virtually all traditional desktop and laptop computers, making them easily accessible to users. Additionally, keyboards are a standard feature in most smartphones and tablets, allowing users to input text even on mobile devices.
Moreover, keyboards have become a standard tool for computer users for several decades now. They have been the primary input device since the early days of computers, and although there have been some advancements in alternative input methods like touchscreens or voice recognition, keyboards have remained prevalent.
Overall, taking into account the ubiquity of keyboards, their long-standing history as the primary input device for computers, and the widespread use of typing in various tasks, we can confidently say that a keyboard is the most commonly used input device.