Civilization manualBook 1: From Bare Hands to Steam and Electricity765 entries · 23 phases · 100 years
The Island
Phase 23 — Logic gates, ferrite core memory and the valve computer  /  About year 76
23.04

Punched paper tape, its code, punch and reader

a message or a list of orders kept as rows of holes in a paper ribbon

KnowledgeYear 76Stands on 235 earlier

AWhat it needs

Needs 235 other products in all, 2 of them directly.

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Open a box to see what it needs. A dashed box is a product already drawn in full: click it to jump there. In the org chart, drag to move around.

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