Windows e fole: o que têm em comum

1. Passo 1. Windows — utiliza — Graphical user interface. Windows.
2. Passo 2. Graphical user interface — evoluiu de — Linha de comando. The graphical interface replaced the text one.
3. Passo 3. Linha de comando — evoluiu de — Typewriter. The teletype was a printing terminal.
4. Passo 4. Typewriter — tem como parte — Keyboard. The keys drive levers with type.
5. Passo 5. Keyboard — faz parte de — Pipe organ. Manuals were the first keyboards.
6. Passo 6. Pipe organ — tem como parte — Fole. Bellows supply the air.

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