The hardware parts used to communicate with the computer from your list are:
- Keyboard - Used to input text and commands.
- Mouse - Used to navigate and interact with the computer's interface.
- Monitor - While primarily an output device, it allows the user to receive information from the computer, which can be considered a form of communication.
The tower is the case that houses the computer's internal components and does not directly communicate with the user.
So, the parts that apply are:
- Keyboard
- Mouse
- Monitor