A double word is exactly according to its name and is two words. Therefore a double word quantity is 32 bits. The double word can also be divided into a high order word and a low order word, four bytes, or eight nibbles etc. The Octal system is based on the binary system with a 3-bit boundary.

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The Double Word

A double word is exactly according to its name and is two words. Therefore a double word quantity is 32 bits. The double word can also be divided into a high order word and a low order word, four bytes, or eight nibbles etc.

In this way The Double word can represent all kinds of different data. It may be of following:

  • An unsigned double word in the range of 0  to  4,294,967,295,
  • A signed double word in the range of -2,147,483,648  to  2,147,483,647,
  • A 32-bit floating point value
  • Or any other data that requires 32 bits or less.

Octal Number System

The Octal Number System was popular in old computer systems but it is very rarely used today. However we shall take an ideal of Octal System just for knowledge.

The Octal system is based on the binary system with a 3-bit boundary. The Octal Number System uses base 8 and includes only the digits 0 through 7. In this way any other digit would make the number an invalid octal number.

The weighted values for each position are as follows shown in the table:

(base)power

85

84

83

82

81

80

Value

32768

4096

512

64

8

1

 

Sample Chapters from book DATA RECOVERY WITH AND WITHOUT PROGRAMMING by Author Tarun Tyagi
Data Recovery with & without Programming


Publishers of the Book
Number of Pages
ISBN
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BPB Publications, New Delhi, India
540
81-7656-922-4
$69.00 (Including Shipping Charges, Cost of Book and Other expenses, Free Source Code CD included with the Book)





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