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Creados a base de valvulas electronicas, de grandes dimensions. Consumian moita enerxia e estropeabanse con facilidade.
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Coa aparicion do transistor nacen os ordenadores de Segunda Xeracion
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Inventada polo britanico Kappany, que demostra que a fibra de vidrio e capaz de transmitir sin distorsion luz ou imaxes polo seu interior.
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.