Ironing board and monitor: what they have in common

1. Step 1. Ironing board — is made of — Cotton. Covered with a cotton cover.
2. Step 2. Cotton — is material for — Vacuum cleaner. The dust bag is a cloth bag.
3. Step 3. Vacuum cleaner — evolved into — Robot vacuum. An autonomous vacuum cleaner.
4. Step 4. Robot vacuum — has part — Microprocessor. Control.
5. Step 5. Microprocessor — is part of — Personal computer. The PC became possible thanks to the microprocessor.
6. Step 6. Personal computer — has part — Monitor. A monitor.

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