1
GATE ECE 1987
Subjective
+8
-0
A 2-input up/down synchrconous counter using two toggle flip-flops is shown in Fig.1. The counter's sequence is to be controlled by the input M as follows:
For M=1, sequence of Q1, Q0 is ..00, 01, 10, 11, 00, 01.......
For M=0, sequence of Q1, Q0 is ..00, 11, 10, 01, 00, 11......
For M=1, sequence of Q1, Q0 is ..00, 01, 10, 11, 00, 01.......
For M=0, sequence of Q1, Q0 is ..00, 11, 10, 01, 00, 11......
(a)Design the necessary feedback logic for T1 and T0.
(b)Realize the feesback logic using inverters and 4-input multiplexers only. Use Q1 and Q0 as the control inputs of the multiplexer with Q1 as the MSB.
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Control Systems
Engineering Mathematics
Analog Circuits
Network Theory
Electromagnetics
Electronic Devices and VLSI
Digital Circuits
Microprocessors
Signals and Systems
Discrete Fourier Transform and Fast Fourier Transform Discrete Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Fourier Transform Representation of Continuous Time Signal Fourier Series Transmission of Signal Through Continuous Time LTI Systems Miscellaneous Sampling Continuous Time Linear Invariant System Discrete Time Linear Time Invariant Systems Discrete Time Signal Z Transform Transmission of Signal Through Discrete Time Lti Systems
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