Download AKTU B-Tech 3rd Sem 2016-2017 NEC 304 Switching Theory And Logic Design Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 3rd Semester (Third Semester) 2016-2017 NEC 304 Switching Theory And Logic Design Question Paper

Printed Pages: 3 NE{ . 30?;
(F ollowing Paper ID and Roll No?.?t0 be?lledmw?nhr
Answer Books};
l?apor ll) : 2289462 Roll No. .? E E ""? .
B.TECH.
Regular Theory Examination (Odd Sem - HELL "2?4! i hm}
SWITCHING THEORY AND LOGIC DESIGNi
Time : 3 Hours Max. Mamie: 1W
Section - A
1. Attempt all parts. All parts carry equal marks. Write;
answer of each part in short {10><2=2m
a) C0nvert(153.513)]0t0 an Octa? number
b) Write the advantages of gray ewe over me ???:Yai?.i5'?1'
binary number sequence.
0) Give the general procedure for ennmr?waggr :
multiievel AND-OR diagram mto am v.2. ' ?
diagram.
d) Draw the logic diagram ofhalf subtracmr.
e) Specify the purpose of valid bit mdicam: ria' priurm
encoden
f) Give the function table OfSR Eatch.
g) Express the characteristic equatnon for the 'z-?l, ?u:?
?op.
304/12/2016/6700 (1) T :1:

NEC - 304
1% Compare mealy and Moore model of ?nite state
machine.
The contents of a four bit register are initially 1011.
The register is shifted six times to the right with
serial input being 101 1 l 1. What are the contents of
the register after each shift?
if;- Write the steps that must be taken for the purpose
of" transferring a new word to be stored into
memory
Section - B
Attempt any ?ve questions from this section
(5x10=50)
Simplify the Boolean function.
H w?xny?zt) = Z(1,3,7,11,15)
Which has the don?t care conditions
d(xw,x,y,z:) = 2(0, 2,5)
hi Implement the following Boolean function with
NAN?D gates
.???;j\?.y,:j; = Z(1,2,3,4,5,7)
t: i Design a full subtractor circuit with three inputs x,y
BM and two outputs Diff'and 'BM. The circuit
subtracts x-y-Bin , where Bin IS the Input borrow, Bout
:2; the cutout borrow and Diff is the difference.
1 -. Jraw :1]: eugit: diagram of a twu to four line decoder
usmg NOR gates only.
timizizmoxmoe (2)
V NEC - 304
e) Construct a JK ?ip-?op. using a D ?ip-?op.*a two
to four one line multiplexer and an inverter.
1) Design a hazard free circuit for the following
Boolean function F(x] ,x2,x3 ) = 2(1, 5, 6,7)
g) Describe the operation of four bit synchronOus
binary counter with neat sketch.
h) Draw the basic con?guration of three PLDs.
Section - C
Note: Attempt any two questions fromthis section.
(2XI5=30)
3. . Minimize the following sWitching function using Quine-
McCluskey method ?
F(x],x2,x3,x4,x5)=Z(O,1,2,8,9,15,17,21,24,25,27,31)
4. Design a combinational circuit that converts a BCD code
to Excess?3 code. - '
5. Implement the following four boolean functions with a
PAL. - I '
W(A,B,C,D)=Z(2,12,13)
X(A,B,C,D) = Z(7,8,9,10,11,12,13,14,]5)
Y(.4.B.C.D) = 2(0.2.3.4.5.5.7.8.10.11.15)
Z(A,B,C,D)= Z(1,2,8,12,13)
. 304/12/2016/6700 (3)!