1. Brainstorm with your team about anything/everything that is computer hardware.
Put one thing on each sticky note.

2. Group each sticky into one of three categories
Input
Process
Output

3. Input Device:
Used to provide data and control signals to an information processing system

4. Processing Device:
The electronics that  process or transform information provided as an input to a computer to an output. Processing devices are
CPU (Central Processing Unit)
GPU (Graphics Processing Unit)

5. Output Device:
any peripheral that receives data from a computer, usually for display, projection, or physical reproduction

6. Peripheral:
Any auxiliary device such as a computer mouse or keyboard that connects to and works with the computer in some way.
Input & output devices are peripherals.