Distribuerte reguleringssystemer Distribuerte reguleringssystemer er etter hvert blitt vanlige i retailer industribedrifter. Ctesibius's clepsydra (3rd century BC) It had been a preoccupation of your Greeks and Arabs (inside the period involving about 300 BC and about 1200 Advert) to help keep exact keep track of of time. In Ptolemaic Egypt, about 270 BC, http://www.vict.nl/