Time-sharing e plumbing: o que têm em comum

1. Passo 1. Time-sharing — evoluiu para — Unix. It grew out of Multics.
2. Passo 2. Unix — utiliza — Linha de comando. The shell.
3. Passo 3. Linha de comando — evoluiu de — Typewriter. The teletype was a printing terminal.
4. Passo 4. Typewriter — funciona como — Movable type. Each typebar carries a piece of movable type pressed against the paper.
5. Passo 5. Movable type — é feito de — Argila. Bi Sheng’s type was made of fired clay.
6. Passo 6. Argila — é material para — Plumbing. Minoan plumbing used ceramic pipes.

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