Classical

Digital Logic - Number representation and computer arithmetic

41:   Which of the following is an unweighted code?
A. 8421 code
B. excess 3 code
C. 2421 code
D. 5211 code
 
 

Option: B

Explanation :


42:  

Let an , an-1 ,............ a1, a0 be the binary representation of an integer b. Then b is divisible by 3 if

A.

number of 1's  is divisible by 3

B.

number of 0's  is divisible by 3

C.

(c) number  of 1's of is divisible by 6

D.

(a) difference of alternate sum, i.e. a0 + a2 +.........- (a1 + a2 + ...) is divisible by 3

 
 

Option: D

Explanation :


43:   Which of the following binary is equal to its l's complement ?
A. 1010
B. 1001
C. No such number exists
D. None of these
 
 

Option: C

Explanation :

'>
44:   Which of the following binary numbers is the same as its 2's complement?
A. 1010
B. 0101
C. 1000
D. 1001
 
 

Option: C

Explanation :

'>
45:   Which of the following statements is not true about BCD code ?
A. Conversion to and from the decimal system can be done easily.
B. It is a 8-4-2-1 weighted code
C. Both (a) and (b)
D. Complement of a number can be found efficiently
 
 

Option: D

Explanation :




Suggest an improvement