ENIAC e electrical telegraph: o que têm em comum

1. Passo 1. ENIAC — utiliza — Punched card. ENIAC’s input and output went through IBM punched-card equipment.
2. Passo 2. Punched card — é utilizado em — Harvard Mark I. The program was read from punched tape and the data from punched cards.
3. Passo 3. Harvard Mark I — tem como parte — Relay. The Mark I was electromechanical, built from relays.
4. Passo 4. Relay — faz parte de — Electrical telegraph. Relays boosted the signal on long lines.

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