Introduction to HDL

Showing 76-100 of 100 answers

The output of an OR gate with three inputs, A, B, and C, is LOW when ________.

A = 0, B = 0, C = 1
A = 0, B = 1, C = 1
A = 0, B = 0, C = 0 Correct
all of the above

The result obtained on subtraction using 2’s complement of 1111-0010 will be _________

11101
11011
1011
1101 Correct

The result of X+X.Y is X.

True Correct
False

The sequential circuit is also called ___________

Strobe
Adder
Latch Correct
Flip-flop

The smallest integer that can be represented by an 8-bit number in 2’s complement form is

0
-256
-128 Correct
-127

The subtraction using 1’s complement of 110 – 100 will give the result ___________

011
010 Correct
-010
-011

The value of radix in binary number system is _____________

10
8
1
2 Correct

There are 5 universal gates.

True
False Correct

What could be the maximum value of a single digit in an octal number system?

5
7 Correct
8
6

What is a multiplexer?

A multiplexer is a device which converts many signals into one Correct
It takes one input and results into many output
It is a type of decoder which decodes several inputs and gives one output
It is a type of encoder which decodes several inputs and gives one output

What is correct instruction if you want the control to go to the location 2000h?

RET 2000h
MOV A, 2000h
JMP 2000h Correct
MOV 2000h

What is the 1’s complement of 11010?

00110
00101 Correct
11010
11011

What is the complement of X’Y’Z?

X+YZ
XYZ’
X+Y+Z’ Correct
X’+Y+’Z’

What is the indication of a short to ground in the output of a driving gate?

Only the output of the defective gate is affected
The affected node will be stuck in the HIGH state
There is a signal loss to all load gates Correct
The node may be stuck in either the HIGH or the LOW state

What kind of a flag is the sign flag?

Address
General Purpose
Status Correct
Instruction

What type of logic circuit is represented by the figure shown below?

AND
NAND
XNOR Correct
XOR

Which of the circuits in figure (a to d) is the sum-of-products implementation of figure (e)?

c
b
a
d Correct

Which of the following combinations of logic gates can decode binary 1101?

One 4-input AND gate, one OR gate
One 4-input AND gate, one inverter Correct
One 4-input NAND gate, one inverter
One 4-input AND gate

Which of the following correctly describes the distributive law.

( A+B)(C+D)=AB+CD
(AB)(A+B)=AB
(A+B)C=AC+BC Correct
(AB)C=ACAB

Which of the following gates has the exact inverse output of the OR gate for all possible input combinations?

NOT
NOR Correct
AND
NAND

Which of the following is not a binary number?

101
000
11E Correct
1111

Which of the following is not a positional number system?

Octal Number System
Roman Number System Correct
Binary Number System
Hexadecimal Number System

Which of the following is the correct representation of a binary number?

(110)2
(124)2
(000)2 Correct
1110

Which of the following logic expressions represents the logic diagram shown?

X=(AB)’+AB
X=(AB)’+A’B’
X=A’B’+AB Correct
X=AB’+A’B

Which of the following logical operations is represented by the + sign in Boolean algebra?

inversion
complementation
AND
OR Correct