Distribuerte reguleringssystemer Distribuerte reguleringssystemer er etter hvert blitt vanlige i store industribedrifter. Ctesibius's clepsydra (3rd century BC) It was a preoccupation of the Greeks and Arabs (in the interval concerning about three hundred BC and about 1200 Advertisement) to keep accurate monitor of your time. In Ptolemaic Egypt, about 270 BC, Ctesibius explained http://www.vict.nl/