title: Converting from lowercase to uppercase using decimal/binary representation of alphabets
body: <p>I'm using RISC-V and I am limited to using just and, or, xori, addition, subtraction, multiplication, division of integer values.</p>
  
  <p>So for instance, the letter "a" will be represented as 97 and "aa" will be represented as 24929, and so on. The UI converts binary sequence into decimal representation, and I cannot directly modify n-th bit.</p>
  
  <p>Is there anyway I can find a simple, general equation of converting from lowercase to uppercase the decimal representation of a maximum of 8 letter sequence of Strings?</p>
  
  <p>Also, I forgot to add, I can't partition the string into individual letters either. Maybe it's possible, but I don't know how to do it.</p>