Pipe organ and transformer: what they have in common

1. Step 1. Pipe organ — has part — Keyboard. Manuals were the first keyboards.
2. Step 2. Keyboard — is part of — Personal computer. A keyboard.
3. Step 3. Personal computer — has part — Power supply. The power supply turns mains power into the voltages the board and drives need.
4. Step 4. Power supply — has part — Transformer. A transformer.

Open Evothings