Water level markings e cartão de pagamento: o que têm em comum

1. Passo 1. Water level markings — faz parte de — Water clock (clepsydra). Hour marks on the wall.
2. Passo 2. Water clock (clepsydra) — evoluiu para — Mechanical clock. Mechanical clocks replaced water clocks, swapping the flow of water for an escapement.
3. Passo 3. Mechanical clock — faz parte de — Parking meter. A clock mechanism.
4. Passo 4. Parking meter — evoluiu de — Vending machine. A payment machine.
5. Passo 5. Vending machine — inclui — ATM. A dispensing machine.
6. Passo 6. ATM — utiliza — Cartão de pagamento. It dispenses money for a card.

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