Snowshoe frame and programmable logic controller: what they have in common

1. Step 1. Snowshoe frame — is part of — Snowshoes. An oval frame.
2. Step 2. Snowshoes — is made of — Leather. The webbing was woven from rawhide strips.
3. Step 3. Leather — is material for — Drum. The drumhead is stretched hide.
4. Step 4. Drum — works like — Drum machine. An electronic drum.
5. Step 5. Drum machine — has part — Microprocessor. A processor sets the rhythm.
6. Step 6. Microprocessor — is part of — Programmable logic controller. A processor.

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