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Decade Counter Standard 4-Stage Binary Ripple Counter Truth Table

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Decade Counter Standard 4-Stage Binary Ripple Counter Truth Table Powered By Docstoc
					           Decade Counter


Standard 4-Stage Binary Ripple Counter




    Truth Table for Decade Counter
          Decade Counter

Modifications for the Decade Counter




            Waveforms
   3-bit Synchronous Counter

          Truth Table




Implementation using T Flip-flops
      Ring Counter

D Flip-flop Implementation




       Waveforms




       Truth Table
    Counter Design Example

Step 1.- State Transition Diagram




 Step 2.- State Transition Table
 Counter Design Example


Step 3.- Mapping Next State
               Counter Design Example

Step 4.- Re-mapping Next State for the Flip-flop Selected
           Excitation Table for the T Flip-flop




       T Inputs needed for each State Transition




                      K-map for TC
Counter Design Example

     K-map for TB




     K-map for TA




Counter Implementation
Counter Design Example

Counter Implementation




     Waveforms
         Counter Design Example

     Verifying if Design is Self-Starting




State Transition Table (Don’t care assigned)
         Counter Design Example

State Transition Table (Don’t care assigned)




    Resulting State Transition Diagram




          DESIGN IS SELF-STARTING
          Counter Example using RS flip-flops


Step 4.- Re-mapping Next State for the Flip-flop Selected
          Excitation Table for the RS Flip-flop




      RS Inputs needed for each State Transition
Counter Example using RS flip-flops

              K-MAPS
Counter Example using RS flip-flops

          IMPLEMENTATION
   Counter Example using RS flip-flops


     Verifying if Design is Self-Starting
State Transition Table (Don’t care assigned)




    Resulting State Transition Diagram




          DESIGN IS SELF-STARTING
          Counter Example using JK flip-flops

Step 4.- Re-mapping Next State for the Flip-flop Selected

          Excitation Table for the JK Flip-flop




      JK Inputs needed for each State Transition
Counter Example using JK flip-flops


              K-MAPS
Counter Example using JK flip-flops


          IMPLEMENTATION
   Counter Example using JK flip-flops


    Verifying if Design is Self-Starting
State Transition Table (Don’t care assigned




    Resulting State Transition Diagram




         DESIGN IS SELF-STARTING
          Counter Example using D flip-flops

Step 4.- Re-mapping Next State for the Flip-flop Selected
           Excitation Table for the D Flip-flop




                         K-MAPS




                     IMPLEMENTATION
    Counter Example using D flip-flops


    Verifying if Design is Self-Starting
State Transition Table (Don’t care assigned




    Resulting State Transition Diagram




         DESIGN IS SELF-STARTING
Determining State Transition from Circuit
         (Inverse Engineering)




        STATE TRANSITION TABLE
Determining State Transition from Circuit
         (Inverse Engineering)
       STATE TRANSITION DIAGRAM

				
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