Egg beater and computer: what they have in common

1. Step 1. Egg beater — is made of — Tin. The whisk is tinned sheet metal.
2. Step 2. Tin — is material for — Solder. Tin solder.
3. Step 3. Solder — is used in — Printed circuit board. Components are soldered on.
4. Step 4. Printed circuit board — is part of — Computer. The main board.

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