How do you convert octal to binary number system?
Octal numbers are in the range 0 to 7. Since 111 binary is 7
decimal, every three bits in a binary number can be directly
converted to a single octal digit.
Thus the 9-bit binary number 101011100 can be split into three
groups of three bits, 101 011 100, each of which can be converted
to octal, 5 3 4, making the octal representation 5348. If a binary
number is not an exact multiple of 3 bits, pad with zeroes until it
is.
Note that all bases that are a power of 2 are directly related
to binary. A single base-4 digit represents two binary digits,
while a base-8 digit represents three bits, base-16 every four
bits, and so on.