Digital Eletronic (5)

8/10/2019 Digital Eletronic (5)

1/12

F-2,Block, Amity Campus

Sec-125, Nodia (UP)

Idia 2!1"!"

ASSI#N$%N&SP'#'A$

S%$%S&%'-ISu*+ect Name

Study CUN&'

Pemaet %ollmet Num*e (P%N)

'oll Num*e

Studet Name

INS&'UC&INSa) Studets ae e.uied to su*mit all t/ee assi0met sets

ASSI#N$%N& %&AI3S $A'4S

Assi0met A Fie Su*+ectie 6uestios 1!

Assi0met B &/ee Su*+ectie 6uestios 7 Case Study 1!

Assi0met C 85 *+ectie 6uestios 1!

*) &otal 9ei0/ta0e 0ie to t/ese assi0mets is "!: ' "! $aks

c) All assi0mets ae to *e completed as typed i 9od;pd>>>>>>>>>>>>>>>>>>>>>>>>>>

ate >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

( ) &ick mak i


2/12

Digital Electronics

ASSIGNMENT A

Q1 a) Prove the Demorgans laws using Boolean algebra.

b) Find the minimal sum of product expression for the following witching

function. F !x1" x#" x$" x%" x&) ' m !1" #" $" (" " *" 1%" 1+" #%" #&" #(" #+"

$," $1)

- d!%"&) Q# a) xplain the wor/ing of master0slave 2

flip flop. tate its merit. 3hat is 4ace problem in flip0 flops5 b) Design a

negative edge triggered 6 flip flop. 6he circuit has two inputs" 6!toggle) and

7!cloc/) and output Q and Q. 6he output state is

complemented if 6'1 and the cloc/ 7 changes from 1 to ,. 8therwise under an9

other input condition" the output Q remains unchanged. Q$ a) Differentiate

between:

i) 7ombinational and e;uential ow this can

be used as a D?@A. b) Design and explain Priorit9 encoder.


3/12


4/12

ASSIGNMENT C

Q1 %#1 code is

a) elf 0complementing code

b) 3eighted code

c) Gon0weighted code

d) =lphanumeric code

Q# =7HH code is a

a)&0bit code

b)+0bit code

c)0bit code

d)1,0bit code

Q$ Hn s9nchronous counters the cloc/ input of each of the bi0stables are connected together so that each

changes state at the same time.

a) 6rue

b) False

Q% Decimal that converts from decimal to binar9 numbered is calledIIIIIIIIIIIIIIII

a) ncoder

b) Decoder

c) 7onverter

d) 7P@

Q& 6he binar9 number 1,11,,.11, in octal number will be a)

1.(


5/12

b) 1&%.(

c) 1%&.#

d) 1+%.&

Q( (% 2 is IIIII .

a) (%,,

b) (%,,,

c)(&&$(

d) (%&$(

Q+ Binar9 1,,, will be the result of which of the following

a) Binar9 1,,, 0 1,,

b) Binar9 1,11 0 1111

c)Binar9 1111 0 111

d) Binar9 11111 J 1111

Q Decimal 1% in binar9 s9stem can be written asIIII

a) 1111

b) 111,

c),111

d) 11,,

Q* Hn digital electronics" which of the following voltage levels does not denote logic K,K5a. , volt b. ,.% volt

c. L,. volt d. none of the above

Q1, =side from the binar9 s9stem" what other number s9stem is commonl9 used in digital s9stems5

a. decimal b. hexadecimal

c. scale0of0# d. none of the above

Q11 InBooleanalgebratheORfunctionisrepresentedbythe'+'sign.

a) True

b) False

Q1 ! signal ha"ing discrete "alues is #no$n as

a) a digital signal

b) an analog signal


6/12


7/12

b) ,!,5

c) ,OR

d) OR

Q1* hich logic gate has the follo$ing truth table(

Hnput Hnput 8utputA B C

, , 1

, 1 ,

1 , ,

1 1 ,

a) !n e6clusi"e ,OR gate.

b) ! t$o7input !,5 gate.

c) ! t$o7input OR gate.

d) !n e6clusi"e OR gate

Q18 In $hich gate output is co&ple&ents of its input4

a) !,5

b) ,OT

c) ,OR

d) ,one of the abo"e

Q In the 9arnaugh &ap sho$n belo$: $hich of the loops sho$n

represents a legal grouping(


8/12

> - / !! \ 1 i DDB

t

!1 CD

1 ! o D-c

!

11 1

-1! ! 1 l !

a) =

b) B

c) 7

d) D

Q1 >ow man9 gate inputs are re;uired to realiMe the following expression5

F'!B-7-D)!B-7-)!=-B-7-)!F-)

a) 1%

b) 1&

c) 1(

d) =ll the above

Q## >ow man9 cells present in a %0variable format5

a) 1(

b)

c) $#

d) Gone of t ha o e


9/12


10/12

Q#+ ?aster0lave 02 flip0flop doesnt solves the race around problem occurs in 20flip0flop

a) 6rue

b) False

Q# Ina :theoutputofthelastflip7flopisconnectedbac#totheinputofthefirstflip7

flop.

a) @ohnson counterb) Ring counter

c) 57type flip7flop

d) ,one of the abo"e

Q8 %o$ &any flip7flops are needed for an *7bit counter(

a) T$o

b) Three

c) Four

d) ?ight

Q$, hichofthefollo$ingcanbeusedin9eyboardencoder(

a) Ahift registersb) Flip7Flopc) Registersd) !ll of the abo"e

Q1 5!0 con"erts .

a) !nalog to 5igitalb) 5igital to !nalogc) Both a and b

Q C3.)*D C()1

a) !.3*b) !3.3*

c) 3*.!3d) 3*.!


11/12

Q CF)17C-0)1D C )1

a) 51

b) 15c) 5d) 5?

Q !n array of flip7flop is also #no$n as .

a) 0ounter b) 5 Flip7Flopc) Registerd) !ll of the abo"e

Q- hich of the follo$ing are based on digital syste&s(

a)?lectronic calculatorb) Eoting ;achinec) Traffic signald) ,one of the abo"e

Q !n OR gate is ?,!B?5 by connecting one of its inputs to logic le"el.

a) b) 1c) or 1d) ,one of the abo"e

Q3 %o$ &any data inputs contains by a output lines decoder(

a) b) c) d) !ll of the abo"e

Q* ! flip7flop $ith acti"e lo$ preset input $ill ha"e Q2D $hen preset is counted to

lo$.

a) 1b) c) 1 and d) ,one of the abo"e.


12/12

Q8 %o$ &any &a6i&u& possible nu&ber of states in a cloc#ed se/uential circuit ha"ing

Flip7flops(

a) b) c) 1d) ,one of the abo"e

Q ! dyna&ic R!; is fabricated using technology.

a) 0;OAb) ;OA

c) 0%I>

Digital Eletronic (5)

Documents

Transcript of Digital Eletronic (5)