Effect of Not Initializing Flip-Flops

In the previous section we used the Digital Setup to initialize all flip-flops to the zero state. Suppose that instead of clearing the flip-flops, we specify the initial states as unknown (X). We will be using the circuit shown on page 487. Follow the procedure for running the analysis, except fill in the Gate-level Simulation Options as shown below  

Note that the initial state of the flip-flop is specified as unknown. Run the simulation and then display the traces V/VOlj, V/VjCLAMPj, V02, V03, and V04 To display traces, select Trace and then Add Trace from the Probe menu bar or press the INSERT key  

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