Alphanumeric code

An alphanumeric code is a special code that uses both letters and numbers to represent something.

Think of it like a secret message. Imagine you have a secret code that only you and your best friend know. You can use this code to send secret messages to each other so no one else can understand what you are saying.

Now, if you want to make the code even more secret, you can use both letters and numbers. For example, instead of just using letters like A, B, and C, you can use a combination of letters and numbers, like A1, B2, and C3.

This makes it harder for someone else to understand the code because they don't know the combination of letters and numbers that you and your friend use.

So, an alphanumeric code is simply a secret code made up of both letters and numbers. It's like making a puzzle that only you and your friend can solve!