Binary

Binary essentially has two digits (0 and 1). We can at least count to two things in a binary bit.

Well how do we count in Decimal?

0 - Start at 0

Count 1,2,3,4,5,6,7,8, and then...

9 This is the last symbol in Decimal

10 - So we start back at 0 again, but add 1 on the left

The same thing is done in binary.

What happens in Decimal?

99 - When we run out of digits, we ...

100 - start back at 0 again, but add 1 on the left

And that is what we do in binary ...

So let's write numbers 0 through 7 in binary

Decimal - Binary

0 - 000

1 - 001

2 - 010

3 - 011

4 - 100

5 - 101

6 - 110

7 - 111