![]() ![]() Circuits that behave in this way are referred to as sequential circuits. Over time the circuit changes through a sequence of states as a result of changes in the inputs. When the circuit s inputs change values, the new input values either leave the circuit in the same state or cause it to change into a new state. The contents of the storage elements are said to represent the state of the circuit. Such circuits include storage elements that store the values of logic signals. ![]() There exists another class of logic circuits in which the values of the outputs depend not only on the present values of the inputs but also on the past behavior of the circuit. Ng f3, h7 h6 349ΔΆ June 8, 22 5:56 vra235_ch7 Sheet number 2 Page number 35 black 35 CHAPTER 7 Flip-Flops, Registers, Counters, and a Simple Processor In previous chapters we considered combinational circuits where the value of each output depends solely on the values of signals applied to the inputs. 1 June 8, 22 5:56 vra235_ch7 Sheet number Page number 349 black chapter 7 Flip-Flops, Registers, Counters, and a Simple Processor 7.
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