Tall wooden churn und internet: was sie gemeinsam haben

1. Schritt 1. Tall wooden churn — ist Teil von — Butterfass. A tall narrow container.
2. Schritt 2. Butterfass — nutzt — Lever. A dasher.
3. Schritt 3. Lever — wird verwendet in — Optical telegraph. The arms were moved by a system of levers and rods.
4. Schritt 4. Optical telegraph — entwickelte sich zu — Electrical telegraph. The electrical telegraph replaced semaphore lines.
5. Schritt 5. Electrical telegraph — funktioniert wie — Packet switching. An analogy: telegraph messages were passed from station to station with intermediate storage — a “store and forward” principle similar to packet transmission.
6. Schritt 6. Packet switching — wird verwendet in — Internet. Data is sent in packets.

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