Tape recorder and screw press: what they have in common

1. Step 1. Tape recorder — evolved into — Sampler. The idea of playing recorded sounds (the Mellotron).
2. Step 2. Sampler — has part — Flash memory. Samples are stored in memory.
3. Step 3. Flash memory — is part of — E-reader. Memory.
4. Step 4. E-reader — evolved from — Codex (book). An electronic book.
5. Step 5. Codex (book) — is used in — Gutenberg printing press. The press printed sheets that were bound into codex books.
6. Step 6. Gutenberg printing press — has part — Screw press. Gutenberg adapted the screw press known from pressing grapes.

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