Digital Logic

Combinational Circuits Logic functions & Minimization Number representation and computer arithmetic Sequential Circuits

C Programming MCQ Compiler Design Computer Graphics Computer Networks Computer Organization Architecture Data Mining Data Structures Data Warehousing MCQ Database MCQ Mathematical Logic Object Oriented Programming Operating System Soft Computing Software Engineering MCQ Theory Of Computation MCQ Unix Web Technology Windows Programming MCQ

Digital Logic - Combinational Circuits

56:

What logic function is performed by the circuit shown below?
Nand gate circuit

A.	Ring counter
B.	Ripple counter
C.	Full adder
D.	Half adder
	Answer Report Discuss
	Option: D Explanation : Here total 7 NAND gates are present and in half adder one AND and one EX-OR gate are required. In turn one EX-OR gate can be built by 5 NAND where as one AND gate can be built by 2 NAND gates so this is diagram of half adder. So the answer is (D). Click on Discuss to view users comments. wdw said: (8:41pm on Sunday 5th January 2014) Option D is Correct Write your comments here: Updating your Comments.. Updating your Comments..

57:

What is the Boolean expression for the following circuit?

or gate circuit

A.	F(A, B) = ( A + B' )' . ( B + A' )'
B.	F( A, B ) = 1 ( Tautology )
C.	F( A, B ) = ⊕ ( inconsistency)
D.	F ( A, B ) = A ⊕ B ( A exclusive OR'ed with B)
	Answer Report Discuss
	Option: A Explanation : Ans is A as input to 1st OR gate is A, and B' so output of 1st OR gate is (A+B') In the same way output for 2nd OR gate is (A'+B) So Final output will be (A+B')'. (A'+B)' Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

58:

In the circuit shown below, which logic function does this circuit generate?

Logic-Circuit

A.	AND
B.	NOR
C.	NAND
D.	OR
	Answer Report Discuss
	Option: D Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

59:

Output of the following circuit is

Logic Circuit

A.	0
B.	1
C.	x
D.	x'
	Answer Report Discuss
	Option: A Explanation : Truth Table for XOR Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

60:

A small dot or circle printed on top of an IC indicates

A.	V_cc
B.	G_nd
C.	Pin 14
D.	Pin 1
	Answer Report Discuss
	Option: D Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

UGC NET Paper 1 UGC NET Computer Science UGC NET Exam GATE Exam Aptitude Viva Questions General Knowledge Computer Questions Online Test

Suggest an improvement