A byte is made up of 8 bits (binary digits). You have a programming language that uses one byte to represent characters and are now modifying your language to use two bytes to represent characters. How many more characters can you represent in your new programming language?
You can only have 2 characters represented in your new programming language since a binary number is made up of 0 and 1, and each character is one byte. One character would be 1 and the other 0.
