Binary numbers

Binary is a way of expressing numbers in ones (high voltage value) or zeros (low voltage value) – there is nothing in between. You can only have either a 1 or a 0.

In mathematical language you are expressing numbers to the base 2 instead of our normal decimal system where we use the base 10.

The number of digits in the group gives is the BIT NUMBER. All the numbers in the table below are FOUR BIT NUMBERS.


Many of your computers are 32 BIT machines – they deal with numbers like:
0011 0011 0100 1110 0011 0001 1010 1011