Base16 is a way to count and represent information using only 16 different symbols. It works kind of like how you count with your fingers, but instead of using 10 symbols (0 to 9), we use 16 symbols (0 to 9 and A to F).
Here's how it works:
Let's say we want to count from 0 to 15 in base16. We would start with 0 and count up until we reach F. After F, we would start back at 0 and add another place, just like how we add a ten's place after we count to 9 in base10.
So, in base16, the number ten is represented by the symbol 'A', eleven is represented by 'B', and so on up until 'F', which represents the number 15.
So if we count in base16 from 0, we would have the following sequence:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F
Base16 is often used in computing because it's easier for computers to understand and work with than base10. For example, when you see a number like 0x3A, that means it's a number in base16. The '0x' shows that the number is in base16 and the '3A' part tells us what that number is.
So that's basically what base16 is. It's just another way to count and represent information using only 16 symbols instead of 10.