CS/BCA/SEM-1/BCA-101/2013-14
2013
DIGITAL ELECTRONICS
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words
as far as practicable.
GROUP – A
(Multiple Choice Type Question)
1. Choose the correct alternatives for the following: 10 x 1 = 10
i) Excess-3 code representation of decimal 984 is
a) 1011 1010 1101 b) 1100 1011 0111
c) 1110 1001 1010 d) 1101 1111 0111
ii) Hexadecimal equivalent of (1586)10 
is
a) (362)16 b) (623)16
c) (632)16 d) (263)16
iii) 2’s complement of 1010111 is
a) 0101001 b) 0110110
c) 0101100 d) 0101101
iv) A function of three variables
FA, B, C=(1, 3, 5, 6) is given by
a) an 8-to-1 multiplexer
b) two 4-to-1 multiplexer
c) one 4-to-1 multiplexer
d) none of these.
[ Some portions of the questions may be missing in this page. Please download the .pdf file attached to get the full question paper. Thank you]