How to convert an octal number to binary?

To convert an octal number to binary, you can follow these steps:

1. Write down the octal number.
2. Convert each octal digit to its binary equivalent using the following table:
Octal: 0 1 2 3 4 5 6 7
Binary: 000 001 010 011 100 101 110 111
3. Write down the binary equivalent of each octal digit.
4. Combine all the binary digits to get the final binary number.

For example, let's convert the octal number 345 to binary:
- Octal 3 = Binary 011
- Octal 4 = Binary 100
- Octal 5 = Binary 101

Therefore, the binary equivalent of octal 345 is 011100101.