Number Systems
Appendix B
B2
The octal numbering system is used to address word and bit locations in
the data table. Its number set is composed of eight digits: the numbers 0
through 7.
Just like all numbering systems, each digit in an otcal number has a certain
place value, represented by a power of eight (Figure B.2).
The decimal value of an octal number is computed by multiplying each
octal digit by its place value and adding these numbers together.
Figure B.2
Octal
Numbering System
357
3 x 8
2
= 192
5 x 8
1
= 40
7 x 8
0
= 7
192
40
7
239
10
8
239
10
=
357
8
B.2
Octal Numbering System
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