Computer Organization

Representation of Floating Number

Question 1
Marks : +2 | -2
Pass Ratio : 100%
The decimal numbers represented in the computer are called as floating point numbers, as the decimal point floats through the number.
True
False
Explanation:
By doing this the computer is capable of accommodating the large float numbers also.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
In IEEE 32-bit representations, the mantissa of the fraction is said to occupy ______ bits.
24
23
20
16
Explanation:
The mantissa is made to occupy 23 bits, with 8 bit exponent.
Question 3
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Pass Ratio : 100%
The normalized representation of 0.0010110 * 2 9 is _______
0 10001000 0010110
0 10000101 0110
0 10101010 1110
0 11110100 11100
Explanation:
Normalized representation is done by shifting the decimal point.
Question 4
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Pass Ratio : 100%
________ constitute the representation of the floating number.
Sign
Significant digits
Scale factor
All of the mentioned
Explanation:
The following factors are responsible for the representation of the number.
Question 5
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The numbers written to the power of 10 in the representation of decimal numbers are called as _____
Height factors
Size factors
Scale factors
None of the mentioned
Explanation:
These are called as scale factors cause they’re responsible in determining the degree of specification of a number.
Question 6
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If the decimal point is placed to the right of the first significant digit, then the number is called ________
Orthogonal
Normalized
Determinate
None of the mentioned
Explanation:
None.
Question 7
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In double precision format, the size of the mantissa is ______
32 bit
52 bit
64 bit
72 bit
Explanation:
The double precision format is also called as 64 bit representation.
Question 8
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The 32 bit representation of the decimal number is called as ___________
Double-precision
Single-precision
Extended format
None of the mentioned
Explanation:
None.
Question 9
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Pass Ratio : 100%
In 32 bit representation the scale factor as a range of ________
-128 to 127
-256 to 255
0 to 255
None of the mentioned
Explanation:
Since the exponent field has only 8 bits to store the value.
Question 10
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Pass Ratio : 100%
The sign followed by the string of digits is called as ______
Significant
Determinant
Mantissa
Exponent
Explanation:
The mantissa also consists of the decimal point.