Index card and jacquard loom: what they have in common

1. Step 1. Index card — is part of — Index card. A stiff card of standard size.
2. Step 2. Index card — is made of — Paper. Paper.
3. Step 3. Paper — is material for — Bouchon’s loom. The program is a perforated paper tape.
4. Step 4. Bouchon’s loom — evolved into — Jacquard loom. Jacquard combined and refined the ideas of Bouchon, Falcon and Vaucanson.

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