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The Symbolic Diagram Technique
Concepts of Boolean Algebra
7 other sections not shown
actuated adder algebraic expression area Fig armature automatic binary number Boolean algebra brush button Carriage reaches cells change-over contact circuit Fig closed coil column connected Consider controlled devices conventions corresponding cycle de-energises defined electrical circuit electromagnet elementary areas energised equivalent Euler circles Euler diagrams example formulae function of three gives the circuit illustrated in Fig instance lamp limit switches logical machine mechanical memory relay method motor obtained place place place pointer G possible pressed problem pulse train push-button ratchet-wheel released representation represented rotation Section self-feed sequence table sequential circuits shaft shown in Fig simplification simultaneously solution starts step-by-step selector stops strict sequence sum of products supply Swinging plate symbolic diagram three variables tion V W X V W X V W X W X W X W X whence x y z y z y z y z