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ECT 464Grey Code vs. BinaryBasic State MachinesState DiagramNext ClassECT 464 ECT 464 Lecture 3bLecture 3bState MachinesState MachinesGrey Code vs. BinaryGrey Code vs. Binary•Grey code involves only one bit Grey code involves only one bit change between adjacent stateschange between adjacent states•Binary code – standard Binary Binary code – standard Binary countingcountingGreyGrey 00 01 11 10 00 01 11 10 00 01 11 10 00 01 11 10Binary 00 01 10 11 00 01 10 11Binary 00 01 10 11 00 01 10 11Basic State MachinesBasic State Machines•Basic State Machines are devices Basic State Machines are devices which step through various state which step through various state identified by tracking bit values identified by tracking bit values according to certain inputs.according to certain inputs.Example :Two way lightingExample :Two way lightingStepper Motor ControllerStepper Motor ControllerState DiagramState DiagramS0/0 S1/0S2/0S3/100001111Input Signal ValueState Number/Output Signal ValueNext ClassNext Class•Input/Output WiringInput/Output Wiring•Special FunctionsSpecial


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Dayton ECT 464 - State Machines

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