The Obama White House has pointed out that every 3 months "about 6 percent of jobs in the economy are destroyed by shrinking or closing businesses, while a slightly larger percentage of jobs are added". A recent MIT economics study of automation in the United States from 1990 to 2007 found that there may be a negative impact on employment and wages when robots are introduced to an industry. When one robot is added per one thousand workers, the employment to population ratio decreases between 0.18–0.34 percentages and wages are reduced by 0.25–0.5 percentage points. During the time period studied, the US did not have many robots in the economy which restricts the impact of automation. However, automation is expected to triple (conservative estimate) or quadruple (generous estimate) leading these numbers to become substantially higher.
Un inventeur indépendant, George C. De Vol, développe et brevette aux États-Unis, en 1954, un système d'enregistrement magnétique capable de commander les opérations d'une machine. Pour le vendre, il crée, avec l'ingénieur Joseph F. Engelberger, la première entreprise de robotique, Unimation Inc. Le premier « Unimate » est vendu en 1961 à General […] Lire la suite☛ http://www.universalis.fr/encyclopedie/brevet-du-premier-robot-industriel/#i_2513
When digital computers became available, being general-purpose programmable devices, they were soon applied to control sequential and combinatorial logic in industrial processes. However these early computers required specialist programmers and stringent operating environmental control for temperature, cleanliness, and power quality. To meet these challenges this the PLC was developed with several key attributes. It would tolerate the shop-floor environment, it would support discrete (bit-form) input and output in an easily extensible manner, it would not require years of training to use, and it would permit its operation to be monitored. Since many industrial processes have timescales easily addressed by millisecond response times, modern (fast, small, reliable) electronics greatly facilitate building reliable controllers, and performance could be traded off for reliability.
Une fois ces étapes réalisées, vous disposerez de la configuration de base afin de pouvoir commencer à travailler sur vos scripts. Voici ci-dessous où PhantomJS doit être localisé si vous travaillez sous Windows, ce screenshot vous montre également à quoi doit ressembler votre environnement de travail. On voit le dossier "selenium" installé donc tout est prêt.