Question

Can a counter be made to start count from any predefined value ?explain.​

Answer 1

Answer:

typical counter counts from 0 up to a predetermined value, called the “preset” value. For example, if you wanted to count from certain value, say from 0 to 50, you would be counting up using a count-up or up-counter. Here, the number “50”, is the predetermined value, which is nothing but preset value.

Answer 2

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we can construct mod counters to count to any value we want by using one or more external logic gates causing it to skip a few output states and terminate at any count resetting the counter back to zero, that is all flip-flops have Q = 0.

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Fortunately, as well as counting, up or down, counters can also have additional inputs called CLEAR and PRESET which makes it possible to clear the count to zero, (all Q = 0) or to preset the counter to some initial value. This means the counter can be stopped and started at will without resetting the outputs to zero.

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