Digital Logic - Combinational Circuits

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41:   Adders

A.	adds 2 bits
B.	is called so because a full adder involves two half-adders
C.	needs two input and generates two output
D.	All of these
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	Option: D Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

42:   The inverter OR-gate and AND gate are called deeision-making elements because they can recognize some input while disregarding others. A gate recognize a word when its output is

A.	words,high
B.	bytes,low
C.	bytes,high
D.	character,low
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	Option: A Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

43:   Which one of the following set of gates are best suited for 'parity' checking and 'parity' generation.

A.	AND, OR, NOT gates
B.	EX-NOR or EX-OR gates
C.	NAND gates
D.	NOR gates
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	Option: B Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments.. '>

44:   An AND circuit

A.	is a memory circuit
B.	gives an output when all input signals are present simultaneously
C.	is a -ve OR gate
D.	is a linear circuit
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	Option: B Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

45:   Which of the following adders can add three or more numbers at a time ?

A.	Parallel adder
B.	Carry-look-ahead adder
C.	Carry-save-adder
D.	Full adder
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	Option: C Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

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