Well e personal computer: o que têm em comum

1. Passo 1. Well — utiliza — Windlass. The bucket was raised with a windlass.
2. Passo 2. Windlass — utiliza — Manivela. The handle of a windlass is a crank.
3. Passo 3. Manivela — faz parte de — Aritmômetro. The handle for adding and subtracting.
4. Passo 4. Aritmômetro — evoluiu para — Calculadora eletrônica. Electronics replaced mechanics.
5. Passo 5. Calculadora eletrônica — evoluiu para — Microprocessor. The Intel 4004 was designed for a Busicom calculator.
6. Passo 6. Microprocessor — faz parte de — Personal computer. The PC became possible thanks to the microprocessor.

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