Which device is primarily used for inputting text?

The keyboard is primarily designed for inputting text, making it the most suitable device for this function. It consists of keys that allow users to input letters, numbers, symbols, and commands into a computer. Each key corresponds to a specific character or function, providing a tactile and efficient way for users to communicate with their devices.

In contrast, while a monitor displays visual output, it does not facilitate text input. A touchpad serves as an input device for controlling the cursor but is primarily used for navigation rather than direct text input. Similarly, a speaker produces audio output and does not serve any purpose in text entry. Therefore, the keyboard stands out as the key input device for typing and text-related tasks.