The hexadecimal system is a base 16 system, just as binary is base 2 and decimal is base 10. The same way that a binary system is more practical for hardware and software implications, hexadecimal is...
Binary is a base 2 number system, while octal is base 8. This happens to make conversion between binary and octal fairly trivial, although more complex than conversion to hexadecimal. To convert to...
Just as with the base 10 numbering system, there is no 'largest number' in binary. Whichever number you think of as the largest can always be made larger by the addition of an extra digit on the end....
The octal and hexedecimal numbering system allows you to specify the contents of an object with fewer characters, making it easier to read and write the values.
An example is 0001001000110100 is...