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Introduction to HDL

Showing 1-75 of 100 answers

 In this technique, there is a link between subscriber and network and a local loop.
  • TSDL
  • ASDL Correct
  • SSDL
  • DSDL
 What does the symbol D represent in a hexadecimal number system?
  • 13 Correct
  • 14
  • 8
  • 16
(1217)8 is equivalent to
  • (2297)10
  • (1217)16
  • (028F)16 Correct
  • (0B17)16
>> operator is used to denote _________
  • less than
  • left shift
  • right shift Correct
  • greater than
2’s complement is obtained by adding 1 to 1’s complement of a number.
  • True Correct
  • False
3 bits full adder contains ________
  • 8 combinational inputs Correct
  • 4 combinational inputs
  • 6 combinational inputs
  • 3 combinational inputs
7’s complement of 432 is _________________
  • 777
  • 345 Correct
  • 543
  • 432
A ____________ is a circuit with only one output but can have multiple inputs.
  • Truth table
  • Boolean circuit
  • Binary circuit
  • Logic gate Correct
A bit in a computer terminology means either 0 or 1.
  • True Correct
  • False
A computer language that is written in binary codes only is _____
  • Pascal
  • C#
  • machine language Correct
  • C
A digital multiplexer is a combinational circuit that selects ___________
  • Many decimal outputs and accepts the selected information
  • One digital information from several sources and transmits the selected one Correct
  • Many digital information and convert them into one
  • Many decimal inputs and transmits the selected information
A technique that allocates time slots dynamically.
  • Statistical TDM Correct
  • Dynamic TDM
  • WDM
  • TDM
ABC is a valid hexadecimal number.
  • True Correct
  • False
Boolean Function is of the form of ________
  • K=f(X,Y,X)
  • Truth values Correct
  • Algebraic Expression
  • Truth Table
Convert (22)8 into its corresponding decimal number.
  • 81
  • 82
  • 18 Correct
  • 28
Convert (52)16 into its decimal equivalent.
  • 28
  • 83
  • 82 Correct
  • 80
Convert 111 110 010 from base 2 to base 8
  • 215
  • 672
  • 762 Correct
  • 125
Convert the binary equivalent 10101 to its decimal equivalent.
  • 22
  • 12
  • 31
  • 21 Correct
Convert the binary number 11001 to decimal.
  • 3
  • 15
  • 13
  • 25 Correct
For a two-input XNOR gate, with the input waveforms as shown below, which output waveform is correct?
  • d Correct
  • b
  • a
  • c
For the device shown here, assume the D input is LOW, both S inputs are LOW and the input is LOW. What is the status of the Y’ outputs?
  • All but Y0 are LOW
  • All are HIGH
  • All but Y0 are HIGH Correct
  • All are LOW
For voice, each channel contains a ___ word of digitized data.
  • 1 Correct
  • 4
  • 0
  • 2
How many AND gates are required to realize the following expression Y=AB+BC?
  • 4
  • 1
  • 2 Correct
  • 8
How many AND, OR and EXOR gates are required for the configuration of full adder?
  • 1, 2, 2
  • 3, 1, 2
  • 2, 1, 2 Correct
  • 4, 0, 1
How many select lines would be required for an 8-line-to-1-line multiplexer?
  • 4
  • 2
  • 3 Correct
  • 8
If a 3-input AND gate has eight input possibilities, how many of those possibilities will result in a HIGH output?
  • 8
  • 2
  • 1 Correct
  • 7
If a 3-input NOR gate has eight input possibilities, how many of those possibilities will result in a HIGH output?
  • 1 Correct
  • 2
  • 8
  • 7
If a signal passing through a gate is inhibited by sending a LOW into one of the inputs, and the output is HIGH, the gate is a:
  • AND
  • NAND Correct
  • OR
  • NOR
In a multiplexer the output depends on its ___________
  • Enable pin
  • Data inputs
  • Select inputs Correct
  • Select outputs
In a number system, each position of a digit represents a specific power of the base.
  • True
  • False Correct
In double precision format, the size of the mantissa is ______
  • 72
  • 52 bit Correct
  • 32 bit
  • 64
In parts of the processor, adders are used to calculate ____________
  • Increment and decrement operators
  • Table indices
  • Addresses
  • All of the Mentioned Correct
In the boolean function w=f(X,Y,Z), what is the RHS referred to as ________
  • literals
  • right hand side
  • expression Correct
  • boolean
In the hexadecimal system, we allow _______ values for each digit of a number
  • 10
  • 8
  • 16 Correct
  • 2
In the IEEE floating point representation, the hexadecimal value 0 × 00000000 corresponds to
  • the normalized value 2-127
  • the special value +0 Correct
  • the normalized value +0
  • the normalized value 2-126
It is rooted in binary code, a series of zeroes and ones each having an opposite value.
  • Decimal Base
  • Numeric System
  • Radix Number System
  • Digital Logic Correct
Latches constructed with NOR and NAND gates tend to remain in the latched condition due to which configuration feature?
  • Low input voltages
  • Cross coupling Correct
  • Gate impedance
  • Synchronous operation
Let r denote number system radix. The only value(s) of r that satisfy the equation 
  • decimal 10
  • decimal 11
  • any value > 2 Correct
  • decimal 10 and 11
Many time slots are wasted in __________
  • FDM
  • Asynchronous TDM
  • TDM
  • Synchronous TDM Correct
New CPU whose instruction set includes the instruction set of its predecessor CPU is said to be ___________ with its predecessor.
  • fully compatible
  • forward compatible
  • backward compatible Correct
  • compatible
Number of outputs in a half adder _____________
  • 2 Correct
  • 1
  • 3
  • 0
One multiplexer can take the place of ___________
  • Several SSI logic gates or combinational logic circuits Correct
  • Combinational logic circuits
  • Several Ex-NOR gates
  • Several SSI logic gates
Output will be a LOW for any case when one or more inputs are zero for a:
  • AND Gate Correct
  • OR Gate
  • NOT Gate
  • NOR Gate
P is a 16-bit signed integer. The 2's complement representation of P is (F87B)16.The 2's complement representation of 8*P
  • (C3D8)16 Correct
  • (F878)16
  • (187B)16
  • (987B)16
The ________ gate is an OR gate followed by a NOT gate.
  • NAND
  • NOR Correct
  • EXNOR
  • EXOR
The 1’s complement of 1111111110.101 is _______________
  • 1010 Correct
  • 0000000000010
  • 1111111110101
  • 1101
The 10’s complement of 562 is __________
  • 4
  • 7
  • 3 Correct
  • 8
The 16’s complement of 74E will be __________
  • 8C2
  • 2B8
  • 8B2
  • F8B2 Correct
The 32 bit representation of the decimal number is called as ____
  • Extended format
  • Double-precision
  • None of the mentioned
  • Single-precision Correct
The 9’s complement of 6578 is ___________
  • 3124
  • 3420
  • 3421 Correct
  • 1234
The binary equivalent of the decimal number 10 is __________
  • 0010
  • 10
  • 010
  • 1010 Correct
The binary number 111 in octal format is ________________
  • 7 Correct
  • 6
  • 5
  • 8
The binary number 1110 in hexadecimal format is _____________
  • E Correct
  • 15
  • 14
  • 6
The Boolean expression for a 3-input AND gate is ________.
  • X = AB
  • X = A + B + C
  • X = AB + C
  • X = ABC Correct
The carry propagation can be expressed as ________
  • All but Y0 are HIGH
  • Cp = AB
  • Cp = A + B Correct
  • All but Y0 are LOW
The complement of the input given is obtained in case of:
  • AND+NOR
  • NOR
  • EX-OR
  • NOT Correct
The complement term for X’.Y’.Z + X.Y will be _____________
  • XYZ’+X’Y’
  • (X+Y+Z’)(X’+Y)
  • (X+Y+Z’)(X’+Y’) Correct
  • (X+Y+Z’)(X’+Y)
The decimal value 0.5 in IEEE single precision floating point representation has
  • fraction bits of 000…000 and exponent value of 0
  • fraction bits of 100…000 and exponent value of 0
  • fraction bits of 000…000 and exponent value of −1 Correct
  • fraction bits of 100…000 and exponent value of 0
The device shown here is most likely a ________
  • Inverter
  • Demultiplexer Correct
  • Multiplexer
  • Comparator
The expression of a NAND gate is_______
  • AB
  • (A+B)’
  • A’B+AB’
  • (AB)’ Correct
The following figure shows a ___________ gate.
  • NOR Correct
  • EXOR
  • NAND
  • OR
The format used to present the logic output for the various combinations of logic inputs to a gate is called a:
  • truth table Correct
  • input logic function
  • Boolean constant
  • Boolean variable
The general form for calculating the number of rows in a truth table is ________
  • 2n+1
  • -2n
  • 2n Correct
  • 2n-1
The input hexadecimal representation of 1110 is _______________
  • 15
  • 14
  • E Correct
  • 0111
The max term when X=Y=Z=1 is ________
  • x+y+z
  • x’y’z’
  • xyz
  • x’+y’+z’ Correct
The maximum number of bits sufficient to represent a hexadecimal number in binary:
  • 7
  • 3
  • 4 Correct
  • 8
The min term when X=Y=Z=0 is _____________
  • x+y+z
  • x’+y’+z’
  • xyz
  • x’y’z’ Correct
The minterm of any expression is denoted by ___________
  • m Correct
  • Mt
  • M
  • min
The normalized representation of 0.0010110 * 2 9 is _______
  • 0 10001000 0010110
  • 0 10000101 0110 Correct
  • 0 10101010 1110
  • 0 11110100 11100
The number of literals in the expression F=X.Y’ + Z are _____________
  • 4
  • 2
  • 3 Correct
  • 1
The numbers written to the power of 10 in the representation of decimal numbers are called as _____
  • Height factors
  • Scale factors Correct
  • Size factors
  • None of the mentioned
The octal equivalent of 1100101.001010 is ______
  • 62412
  • 14521
  • 15412
  • 14512 Correct
The Output is LOW if any one of the inputs is HIGH in case of a _________ gate.
  • NAND Correct
  • NOR
  • AND
  • OR
The output of a NOR gate is HIGH if ________.
  • any input is HIGH
  • all inputs are HIGH
  • any input is LOW
  • all inputs are LOW Correct
The output of an AND gate with three inputs, A, B, and C, is HIGH when ________.
  • A = 1, B = 0, C = 1
  • A = 0, B = 0, C = 0
  • A = 1, B = 1, C = 0
  • A = 1, B = 1, C = 1 Correct
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