Answer: OUTPUT DEVICE.
Explanation: A computer can be defined as an electronic device that performs mathematical calculations and logical operations, especially one that can store, process and retrieve large amounts of data very quickly.
The components of a computer include, an input device, a hardware that provides input into the computer for example, a keyboard, a processing unit that controls the central processing system, memory and storage for storing and retrieving data, and an output device for receiving data sent out, for example, a monitor or a printer.