Q 11

What is the major restriction while operating a pulse-triggered flip-flop?

Q 10

Determine the number of flipflops that would be required to build the following counters:
a) Mod-6
b)Mod-11
c)Mod-15
d)Mod-19
e)Mod-31

Q9

Explain how ring and shift counters can be used as sequence generators?

Q8

Briefly explain the operation of a digital clock?

Q7

What is the major difference in the operation of edge-triggered flip-flops and master slave flipflpos?

Q6

The direct current required by a particular flip-flop that operates on a +5 V dc source is found to be 10mA. A certain digital device uses 15 of these flip-flops. Determine the capacity required for the +5V dc supply and the total power dissipation of the system?

Q5

Assuming that only X and Y logic inputs are available and their complements are not available.Then, what is the minimum number of 2 input NAND gate required to implement X (Ex-OR) Y ?

Q4

How many don't cares are there in BCD adder?

Q3

Design a circuit that compares 2 four bit numbers A and B to check if they are equal.The circuit has one output x so that x=1 if A=B and x=0 if A not equal to B

Q2

Design a combinational circuit with 4 input lines that represent a decimal digit in BCD and 4 output lines that generates the 9's complement of the input digits?

Q1

What is the fundamental mode of operation of asynchronous sequential circuit?If there are more than one input to such a circuit what constrain is imposed on them?