Question: Design Moore sequence detector to detect a sequence ----101-using DF/F
0

Mumbai University > ELECTRO > Sem 3 > Digital Circuits and Designs

Marks: 10M

Year: Dec 2013

ADD COMMENTlink
modified 3.2 years ago  • written 3.2 years ago by gravatar for Pooja Joshi Pooja Joshi740
0
  • A sequence detector is a sequential state machine. In a Moore machine, output depends only on the present state and not dependent on the input (x). Hence in the diagram, the output is written with the states.

  • The state diagram of a moore machine for a 101 detector is:

enter image description here

  • The state table for the above diagram:

enter image description here

  • Four states will require two flip flops. Consider two D flip flops. Their excitation table is shown below.

  • Excitation table:

enter image description here

  • K-maps to determine inputs to D Flip flop:

enter image description here

  • Circuit diagram for the sequence detector:

enter image description here

ADD COMMENTlink
written 3.2 years ago by gravatar for Pooja Joshi Pooja Joshi740

This can be done with lesser no of states. Three states .Please see to this if possible.

ADD REPLYlink
written 2.3 years ago by gravatar for abhaypratapsingh7sep abhaypratapsingh7sep0
Please log in to add an answer.