资料介绍
数字设计原理与实践(九). DO NOT
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9
c h a p t e r
DO NOT
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Sequential-Circuit
Design Examples
DO NOT
ust about every real digital system is a sequential circuit―all it takes
J is one feedback loop, latch, or flip-flop to make a circuit’s present
behavior depend on its past inputs. However, if we were to design or
analyze a typical digital system as a single sequential circuit, we
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would end up with an enormous state table. For example, strictly speaking, a
PC with only 16 Mbytes of main memory is a sequential circuit with well
over 2128,000,000 states!