List the six external parts of a computer system and identify which are output and which are input devices.

External hardware/peripherals are external devices connected to a computer that extend it's functionality. Some common ones are:

1. Monitor - output
2. Keyboard - input 
3. Speakers - output
4. Printer - output
5. Microphone - input
6. Mouse - input

Input is anything that's used to feed/put data into a computer. So for a keyboard that's which keys you're pressing, microphone that's sound data etc. Output is any computer-generated data displayed on screen, printed on paper or in machine readable form, such as a disk.

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