Blockchain e sino: o que têm em comum

1. Passo 1. Blockchain — é um tipo de — Banco de dados. A blockchain is a database copied by many participants, so its records cannot be changed in secret.
2. Passo 2. Banco de dados — evoluiu de — Hollerith tabulator. Processing large datasets began with tabulators.
3. Passo 3. Hollerith tabulator — utiliza — Punched card. The 1890 census data was encoded on punched cards.
4. Passo 4. Punched card — funciona como — Pinned cylinder. Pins on a cylinder and holes in a card are two ways of recording a sequence for a machine.
5. Passo 5. Pinned cylinder — faz parte de — Carrilhão. Automatic carillons have a pinned drum.
6. Passo 6. Carrilhão — tem como parte — Sino. Bells.

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