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The binary, you’ve probably heard of it.Binary that's the main language a computer that they only understand and how computers work. But do you know how binary works? First we need to understand exactly how our numerical based system known as decimal or based ten works the way it does. So there are counting 10 symbols that we use for all of our numbers. Starting from zero, we can count all the way up to nine before we run out of symbols to use and the main reason we use what we called Positional Notation. So in the base 10 system, as soon as we get to an exponent of 10 we need to add another digit to the left of our current digital because there are 10 symbols. Each new digit has to have a value 10 times greater than the digit two. It's right. So that's using 10 symbols. But what if you had only two symbols to work with? Then everything that I said still applies with just two symbols. Each new digit needs to have a value two times greater than the digit two. It's right. It's actually really simple. It's just multiplication and addition. It gets a lot more complicated from here with bits and bytes and Boolean logic and ASCII. 

And the list just goes on and on. So let's return to base systems. There are a lot of ways to write numbers other than decimal and binary. You've got base to base three based for base five and so on. They all work with the same principles of positional notation, so you might be wondering with all these numbering systems to choose from.
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