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A ripple counter designed with J-K flip-flops provided with CLEAR (Cl.) input is shown in the figure. In order that this circuit functions as a MOD-12 counter, the NAND gate inputs (X1 and X2) should be
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A ripple counter designed with J-K flip-flops provided with CLEAR (Cl.) input is shown in the figure. In order that this circuit functions as a MOD-12 counter, the NAND gate inputs (X1 and X2) should be
Electronics mcq question image Correct Answer A and D

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Which of the following circuits are equivalent (i.e., they produce the same output for all inputs)? F = ab + bc + ca G = (a + b) (b + c) (c + a) H = NAND (NAND(a, b), NAND(b, c), NAND(c, a))
Which of the following statements regarding binary counters are correct? (a) Clock inputs of all the flip - flops of a synchronous counter are applied from the same source whereas those in an asynchronous counter are from different sources. (b) The asynchronous counter has ripple effects whereas the synchronous counter does not. (c) Only J-K flip-flops can be used in synchronous counters whereas asynchronous counters can be designed with any kind of flip flops. (d) Latches can be used for designing asynchronous counters. Code :
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