Active TopicsActive Topics  Display List of Forum MembersMemberlist  CalendarCalendar  Search The ForumSearch  HelpHelp
  RegisterRegister  LoginLogin
 One Stop GATE ForumGATE Previous Years Test Papers - Discuss HereCS Papers
Message Icon Topic: Digital Electronics sample qns. Post Reply Post New Topic
Author Message
Neha Agarwal
Groupie
Groupie


Joined: 04Jan2007
Online Status: Offline
Posts: 59
Quote Neha Agarwal Replybullet Topic: Digital Electronics sample qns.
    Posted: 09Jan2007 at 6:42pm


Que. 1 The majour disadvantage of magnetic tapes is
A
cost
B
unreliability of stored data
C
slow data recording
D
data is to be accessed sequentially

Que. 2 In time division multiplexing
A
time is doubled betwen bits and byte
B
time slicing at CPU level takes place
C
total time available in the channel is divided between several 
users and each users is alloted a time slice
D
none of these

Que. 3 The number of full and half-adders required to add 16-bit numbers     
is
A
8 half-adders, 8 full-adders
B
1 half-adder, 15 full-adders
C
16 half-adders, 0 full-adders
D
4 half-adders, 12 full-adders

Que. 4 The simultaneous equations on the Boolean variables x, y, z and w,  x+y+z=l 
 xy =0  xz+w = l  x+[(complement)z w]  =0  have the following solution 
for x, y, z and w, respectively.
A
0 1 0 0
B
1 1 0 1
C
1 0 1 1
D
1 0 0 0

Que. 5 The 2's complement representation of (-539) 10 in hexadecimal is
A
ABE 
(BDBC
B
wx'y'+xy+xz
C
DE5
D
9E7

Que. 6 How many gates are needed for 3-bit up counter using standard binary and 
using T flip-flop?Assume unlimited fan-in
A
4
B
3
C
2
D
1

Que. 7 A boolean function x'y'+xy+x'y is equivalent to
A
x'+y'
B
x+y
C
x+y'
D
x'+y

Que. 8 In an SR latch by crossing coupling two NAND gates if both S and R inputs 
are set to 0 then it will result in
A
Q=0, Q'=1
B
Q=1, Q'=0
C
Q=1, Q'=1
D
indeterminate state

Que. 9 In 2's  complement addition overflow
A
is flagged whenever there is carry from sign bit addition
B
cannot occur when positive values added to the negative value
C
is flagged whenever there is carry from sign bit solution
D
none of the above

Que. 10 the minimum number of NAND gates required to implement the boolean function 
A+AB+ABC=
A
0
B
1
C
4
D
7




Post Resume: Click here to Upload your Resume & Apply for Jobs

IP IP Logged
Post Reply Post New Topic
Printable version Printable version

Forum Jump
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

GET LATEST FRESHERS JOBS IN YOUR MAIL





This page was generated in 0.094 seconds.
Vyom is an ISO 9001:2000 Certified Organization

© Vyom Technosoft Pvt. Ltd. All Rights Reserved.

Job Interview Questions | Girls Magazine | DLL, OCX File Errors | Freshers Jobs | Placement Papers | More Papers