Protective lacquer layer and data centre: what they have in common

1. Step 1. Protective lacquer layer — is part of — Compact disc. A coating over the reflective layer.
2. Step 2. Compact disc — uses — Binary number system. Sound is recorded as numbers.
3. Step 3. Binary number system — is used in — Microprocessor. It works with binary numbers.
4. Step 4. Microprocessor — is part of — Server. Processors.
5. Step 5. Server — is part of — Data centre. Thousands of servers.

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