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Digital Electronics and Logic Design MCQs | Page - 33

Dear candidates you will find MCQ questions of Digital Electronics and Logic Design here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Q. 321) he bipolar TTL logic family that was developed to increase switching speed by preventing transistor saturation is:

(A) emitter- coupled logic (ecl).
(B) current- mode logic (cml).
(C) transistor- transistor logic (ttl).
(D) emitter- coupled logic (ecl) and transistor- transistor logic (ttl).
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Q. 322) In TTL the noise margin is between

(A) 0.4 v and 0.8 v.
(B) 0.0 v and 0.4 v.
(C) 0.0 v and 0.5 v.
(D) 0.0v and 0.8 v.
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Mr. Dubey • 51.17K Points
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Q. 323) What is the transitive voltage for the voltage input of a CMOS operating from 10V supply

(A) 1v
(B) 5v
(C) 10v
(D) 15v
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Q. 324) A combinational logic circuit which sends data coming from a single source to two or more separate destinations is

(A) decoder
(B) encoder
(C) multiplexer
(D) demultiple xer
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Q. 325) Data can be changed from special code to temporal code by using

(A) shift registers
(B) counters
(C) combination al circuits
(D) a/d converters
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Q. 326) Odd parity of word can beconveniently tested by

(A) or gate
(B) and gate
(C) nor gate
(D) xor gate
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Q. 327) Which one of the following will give the sum of full adders as output ?

(A) three point majority circuit
(B) three bit parity checker
(C) three bit comparator
(D) three bit counter
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Q. 328) The number of full and half-adders required to add 16-bit numbers is

(A) 8 half-adders, 8 full-adders
(B) 1 half-adder, 15 full- adders
(C) 16 half- adders, 0 full- adders
(D) 4 half- adders, 12 full-adders
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Q. 329) A one-to-four line demultiplexer is to be implemented using a memory. How many bits must each word have ?

(A) 1 bit
(B) 2 bits
(C) 4 bits
(D) 8 bits
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Q. 330) What logic function is produced by adding an inverter to the output of an AND gate ?

(A) nand
(B) nor
(C) xor
(D) or
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