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- The octal number system (base 8) uses 8 different symbols, 0, 1, 2, 3, 4, 5, 6, 7 to represent numbers. Its a place value system. decimal octal 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 10 9 11 10 12
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 10
9 11
10 12
Converting Octal to Decimal 1048 =1x82 + 0x81 + 4x80 =64 + 0 + 4 =6410 1378 =1x82 + 3x81 + 7x80 =64 + 24 + 7 =9510 1138 =1x82 + 1x81 + 3x80 =64 + 8 + 3 =7510 1438 =1x82 + 4x81 + 3x80 =64 + 32 + 3 =9910 1218 =1x82 + 2x81 + 1x80 =64 + 16 + 1 =8110
1048
=1x82 + 0x81 + 4x80
=64 + 0 + 4
=6410
1378
=1x82 + 3x81 + 7x80
=64 + 24 + 7
=9510
1138
=1x82 + 1x81 + 3x80
=64 + 8 + 3
=7510
1438
=1x82 + 4x81 + 3x80
=64 + 32 + 3
=9910
1218
=1x82 + 2x81 + 1x80
=64 + 16 + 1
=8110
