Which of the following is an example of output device

Devices are classified by the direction in which data flows relative to the computer. An output device presents information that the computer has processed to the user, rather than sending new data into the computer.

A speaker takes processed audio signals from the computer and converts them into sound the user can hear, which makes it an output device. A keyboard and a mouse are input devices because they send commands and data into the computer. A microphone is also an input device, since it captures sound from the environment and converts it into data for the computer to process.

Exam takeaway: ask which way the information travels; if the device delivers processed results to the user (sound, image, print), it is output, and if it sends raw data or commands into the computer, it is input.