You actually can. a is with 0110 0001. b is 0110 0010. c is 0110 0011. d is 0110 0100. e is 0110 0101. For every letter after a, you add 1. It's just that it uses the binary system, and not the decimal system. so n is 0110 1110. o is 0110 1111. making no 0110 1110 0110 1111. Then p is 0111 0000.
For numbers, 0 is 0011 0000. 1 is 0011 0001. 2 is 0011 0010. 3 is 0011 0011. 4 is 0011 0100. 5 is 0011 0101. etc.
For Uppercase letters, A is 0100 0001. B is 0100 0011. etc.