Digital Logic

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

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Digital Logic - Number representation and computer arithmetic

21: A circuit produces 1's complement of the input word, one application is binary subtraction. It is called

A.	Logic gate
B.	Register
C.	Multiplexer
D.	BCD convertor
	Answer Report Discuss
	Option: B Explanation : Click on Discuss to view users comments. Ravi said: (11:13pm on Monday 5th October 2015) I think the answer is A, as 1's complement is same as NOT logic gate (which does inversion of bits). Write your comments here: Updating your Comments.. Updating your Comments.. '>

22: The most commonly used character codes for transmission is

A.	EBCDIC
B.	ASCII
C.	BCD
D.	None of these
	Answer Report Discuss
	Option: D Explanation : Click on Discuss to view users comments. KISHAN BHURKE said: (9:52am on Saturday 17th September 2016) I THINK ANS IS B ASCII sunday konyak said: (9:46am on Sunday 18th February 2018) The correct Answer is BCD. since BCD is the most basic and commonly used for code conversion. Write your comments here: Updating your Comments.. Updating your Comments..

23: How many different number a 6-bit binary word can represent?

A.	63
B.	64
C.	124
D.	128
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	Option: B Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

24: (r-1)'s complement of the (r-1)'s complement of an integer number is

A.	original number
B.	(r-2)'s complement of the number
C.	r's compliment
D.	BCD code of number
	Answer Report Discuss
	Option: A Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments.. '>

25: The sign magnitude representative of decimal number -637 is

A.	0687
B.	9687
C.	1687
D.	1620
	Answer Report Discuss
	Option: B Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

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