Tracker bar y Máquina analítica de Babbage: qué tienen en común

1. Paso 1. Tracker bar — forma parte de — Pianola. Holes let air through to the valves.
2. Paso 2. Pianola — funciona como — Telar Jacquard. A perforated medium controls a machine — a weaving one in one case, a musical one in the other.
3. Paso 3. Telar Jacquard — inspiró — 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.

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