Electrical telegraph e paper machine: o que têm em comum

1. Passo 1. Electrical telegraph — tem como parte — Relay. Relays boosted the signal on long lines.
2. Passo 2. Relay — faz parte de — Harvard Mark I. The Mark I was electromechanical, built from relays.
3. Passo 3. Harvard Mark I — utiliza — Punched card. The program was read from punched tape and the data from punched cards.
4. Passo 4. Punched card — é feito de — Paper. Punched cards are stiff card.
5. Passo 5. Paper — utiliza — Paper machine. Industrial production.

Abrir Evothings