File:Sistema SIGO em implantação na RFFSA (1983).jpg

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Description
English: Transporte; Projeto de sistema SIGO (Sistema de Gerenciamento Operacional), A informatização da Rede Ferroviária Federal S/A (RFFSA), com 18 microcomputadores cobra 540 na fase inicial.
Date circa 1983
date QS:P,+1983-00-00T00:00:00Z/9,P1480,Q5727902
Source Arquivo Público do Estado de São Paulo
Author Rede Ferroviária Federal-Departamento Regional de Comunicação Social/Walter Wattemberg

Licensing[edit]

Public domain
This work is in the public domain in Brazil for one of the following reasons:
  • It is a work published or commissioned by a Brazilian government (federal, state, or municipal) prior to 1983. (Law 3071/1916, art. 662; Law 5988/1973, art. 46; Law 9610/1998, art. 115)
  • It is the text of a treaty, convention, law, decree, regulation, judicial decision, or other official enactment. (Law 9610/1998, art. 8)
  • It is a work whose authors' rights belong to the Brazilian government (federal, state, or municipal), for which the economic rights shall be protected for a period of 70 years from the first of January of the year following that of their disclosure or that of the author's demise, whichever is later. ([1])

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