Sequential Circuits

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Sequential Circuits

• CS341 Digital Logic and Computer Organization
• F2003

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Topics

• Definition of sequential circuit
• asynchronous responds to inputs at discrete time
  intervals.
• synchronous responds to inputs at the moment the
  inputs change.
• Storage elements
• Latches
• flip-flops
• Sequential circuit analysis
• Sequential circuit design
• HDL (hardware description language)
• VHDL
• Verilog

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Feedback paths (outputs from storage elements)
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Buffer, a storage element with propagation delay
tpd
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Fig. 4-31 VHDL Process Description of a Sequence
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Fig. 4-31 VHDL Process Description of a Sequence
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Fig. 4-31 VHDL Process Description of a Sequence
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Fig. 4-31 VHDL Process Description of a Sequence
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Fig. 4-34 Verilog Process of a Sequence Recognizer
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Fig. 4-34 Verilog Process of a Sequence
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