60. What is the use of Flip flop?
(^) To store current ൯) To 80086 Binary information
(C) 10 store voltage (0) 10 store analog signals
61. The ability of a circuit to tolerate noise without causing unwanted changes in the output
voltage is known as:
(A) noise immunity (B) noise margin
(0) fan-in (D) fan-out

62. A full adder circuit has :
(^) 2 inputs and 2 outputs (B) 3 inputs and 2 outputs
(C) 2 inputs and 3 outputs (D) None
63. Which gates are ideal for checking the parity of a binary number because they produce an
output 1 when the input has an odd no. of 1s?
(^) OR Gate (B) AND Gate
(0) EX-OR Gate (D) EX-NOR Gate

64. Which circuit has 2" data inputs, one data output and ൩ control inputs?
(A) Multiplexer (B) Demultiplexer
(C) Encoder (D) Decoder

65. Which of the following statement is/are correct about counters?
டு 1൩൭ synchronous counter every flip flop is triggered by the clock parallel.
Gi) Inanasynchronous counter the clock is applied serially.
(ii) Synchronous counters are also called as ripple counters.
(^) @ and (ii) only (8). 0) ೩76 (iii) only
(C) ©) and (iii) only (D) 0), Gi) and (11) only
66. How many inputs are available in the 7447 BCD to seven segment decoder used to drive the
LED display?
(^) Hight (B) Seven
(C) Four (D) Two
67. The logic circuits whose output at any instant of time depends not only on the present input
but also on the past outputs are called :
(A) Multiplexer (8) Demultiplexer

(C) Combinational logic circuit (D) Sequential logic circuit

102/2022 10 A