Darts and hollerith tabulator: what they have in common

1. Step 1. Darts — is made of — Plant fibre. Modern ones are made of compressed sisal.
2. Step 2. Plant fibre — is used in — Loom. Cloth is woven from threads spun from fibres.
3. Step 3. Loom — includes — Jacquard loom. A loom with punched cards.
4. Step 4. Jacquard loom — uses — Punched card. Each punched card sets one pass of the pattern.
5. Step 5. Punched card — is used in — Hollerith tabulator. The 1890 census data was encoded on punched cards.

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