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Basically, in a shift register, the strobe signal is used to count the number of clock signals.

Don’t care conditions are seen in K-Map and is useful for simplifying expressions.

Among the 4 options, ring counter has the highest speed.

In total , 8 unused states are there in Johnson Counter.

Ring counter, having 5 flip-flops will have 5 states.

The output of Moore sequential circuits depends only on present states.

The conversion from AC to DC is, however, an easier way instead of buying a new battery every time you need DC. A rectifier is an electrical device that converts AC to DC, and is often used in many devices used around us.

The output is not steady DC and is not practical to use with circuits. A filter circuit also known as a smoothing capacitor is added to the rectifier circuit to improve the output. Smoothing capacitors are connected in parallel with the load across the output of the full wave bridge rectifier.

Counter is the widest application of flip-flops.
It is a group of flip-flops with a clock signal applied.
Counters are of two types.
Asynchronous or ripple counters and Synchronous counters.

BCD counter is similar to decade counter. Because both start from 0 to 9 and both have same number of stages.

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