II B.Tech I Sem I
Internal Sub: DLD
Branch: CSE-A & B Date: 08-11-14 Max Time: 90min
1. a) Subtract the
following numbers using 10’s & 9’s complement methods. [5]
i)
5250-425 ii) 526-359
b) Express the
following numbers in decimal & octal number systems. [5]
i)
(110101.1011)2 ii)
CDEA16
2. a) Simplify the expression Z=AB+AB’ [(A ‘C’)]’. [5]
b) Find dual &
complement of A+B+A’B’C. [2]
c) Implement the
following Boolean function with NAND-NAND logic
F=A’B’+A’C+B’C [3]
3. a) Implement the following
logic function using a 8X1 multiplexer.
F(A,B,C,D)=∑m(1,2,5,11,12,13,14,15) [4]
b) Draw the block diagrams of encoder,
decoder & multiplexer [3]
c) With the help of logic diagram explain a
parallel adder/subtractor. [3]
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