Test: Sequential Circuits- 1

QUESTION: 1

The time required for a pulse to change from 10 to 90 percent of its maximum value is defined as

A.
Rise time
B.
Decay time
C.
Propagation time
D.
Operating speed

Solution:

QUESTION: 2

The clock signals are used in sequential logic circuits to

A.
Tell the time of the day
B.
Tell how much time has elapsed since the system was turned on
C.
Carry serial data signals
D.
Synchronize events in various parts of system

Solution:

QUESTION: 3

An n stage ripple counter can count up to

A.
2ⁿ
B.
2ⁿ - 1
C.
n
D.
2^n-1

Solution:

An n stage ripple counter can count up to the binary value represented by the n-bits.
= 2ⁿ - 1

QUESTION: 4

A 2 MHz signal is applied to the input of a J-K flip-flop which is operating in the ‘toggle’ mode. The frequency of the signal at the output will be

A.
1 MHz
B.
2 MHz
C.
4 MHz
D.
8 MHz

Solution:

QUESTION: 5

Register is a

A.
Set of capacitor used to register input instructions in a digital computer.
B.
Set to paper tapes and cards put in a file.
C.
Temporary storage unit within the CPU having dedicated or general purpose use.
D.
Part of the auxiliary memory.

Solution:

Register is consists of group of flip flop, with each flip-flop having 1 bit of information. Register acts as a temporary storage. Used for general purpose.

QUESTION: 6

Which of the following circuit is called latch

A.
AND circuit
B.
NAND circuit
C.
Flip-flop
D.
ROM circuit

Solution:

QUESTION: 7

T flip-flop is commonly used as

A.
A digital counter only
B.
A delay switch
C.
A digital counter and frequency divider
D.
None of these

Solution:

QUESTION: 8

When a J-K flip-flop is constructed from an SR flip-flop

A.
S = JQ; R = K + JQ
B.
J = S, K = R
C.
J = SR' Q, K = S' (R + Q)
D.

Solution:

QUESTION: 9

If in a shift resistor Q₀ is fed back to input the resulting counter is

A.
Twisted ring with N : 1 scale
B.
Ring counter with N : 1 scale
C.
Twisted ring with 2 N : 1 scale
D.
Ring counter with 2 N : 1 scale

Solution:

QUESTION: 10

The dynamic hazard problem occurs in

A.
Combinational circuit alone
B.
Sequential circuit only
C.
Both (a) and (b)
D.
None of these

Solution:

10 Questions MCQ Test Question Bank for GATE Computer Science Engineering | Test: Sequential Circuits- 1

The time required for a pulse to change from 10 to 90 percent of its maximum value is defined as

The clock signals are used in sequential logic circuits to

An n stage ripple counter can count up to

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