Grenade e Máquina analítica de Babbage: o que têm em comum
- Passo 1. Grenade — é feito de — Argila. Medieval grenades were ceramic vessels.
- Passo 2. Argila — é material para — Movable type. Bi Sheng’s type was made of fired clay.
- Passo 3. Movable type — faz parte de — Gutenberg printing press. Text is set from metal type.
- Passo 4. Gutenberg printing press — funciona como — Jacquard loom. An analogy, not proven influence: both set type and a chain of punched cards are a replaceable pattern that a machine reproduces over and over.
- Passo 5. Jacquard loom — inspirou — Máquina analítica de Babbage. Babbage borrowed Jacquard’s punched cards directly for entering operations and data; Ada Lovelace compared the machine to the Jacquard loom.