De Bruijn Notation is a way to represent numbers using only two symbols (like 0 and 1). We can represent any number by putting the two symbols together in different groupings. For example, if we wanted to represent the number 8, we could write 000, 001, 010, 011, 100, 101, 110, and 111. Those groupings of 0s and 1s are what De Bruijn Notation looks like. It's like a code that only computers can understand.