Six external parts of a computer system, which are output and which are input devices.

1. The keyboard is an example of an input device.

2. A mouse is an example of an input device.

3. Display Monitors are examples of output devices as they display information. 4. Audio speakers are examples of output devices. 5. Headsets with microphones are an example of both an input and output device as they allow sound to be inputted and receive sound. 6. Printer/Printer scanner. A printer would be an example of an output device, however, a printer scanner combination would be both input and output.