A Homogeneous Beam Of Triangular Cross Section Is Subjected To A Pure Bending Moment As Shown In Figure
Designing a sequential logic circuit to detect the sequence 0101 using a Mealy FSM model involves creating a state table, determining the next state and output based on present input and state, and using JK flip flops and excitation tables. The circuit returns to the initial state when any other sequence is detected.
Designing the sequential logic circuit to detect the sequence 0101 using Mealy FSM model requires following steps and considerations. Mealy FSM model is different from Moore FSM model in the way that Mealy model produces output only when the state of circuit changes.
The output of the circuit is dependent on the present state as well as the present input. Sequence detection using Mealy FSM model The first step is to create a state table representing the input sequence. For this, we need to specify the input bits, present state and the output.
Here’s the state table for detecting 0101 sequence using JK flip flops: Present State Input Next State OutputQ1 Q0 x Q1+ Q0+ z 0 0 0 0 1 0 0 1 0 1 1 0 1 1 1 0 0 0 1 0 1 1 1 0 0
The output of the sequential circuit in this example is 1 whenever it detects the pattern 0101. When the state is S3, it is always followed by the state S0, so when the circuit is in state S3, and input of 0 is detected, the output will go high indicating the sequence has been detected. This is repeated for the next 3 states when the sequence is detected.
The circuit returns to state S0 and starts the detection over when any other sequence is detected. As we are using JK flip flops, we must also make use of excitation tables to determine the JK flip flop input when transitioning from one state to the next.
We must also encode the states to binary to simplify the circuit. The state table with binary encoding for this example is shown below:
Present State Input Next State OutputQ1 Q0 x Q1+ Q0+ z 0 0 0 0 1 0 0 0 1 1 0 1 1 1 0 0 0 1 0 1 1 1 0 0
Whenever the circuit is in the state S3, an input of 0 will set the output high, indicating the pattern 0101 has been detected. If the input does not match the pattern, the circuit returns to state S0.
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