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 80
23.06

Relay calculator

a room of relays that works through a long sum by itself, from a tape of orders

KnowledgeYear 80Stands on 244 earlier

AWhat it needs

Needs 244 other products in all, 4 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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