Coding Isomorphisms The coding of external symbols into symbols internal to a compute can sometimes be carried out in such a way that relevant informational properties are preserved, but in a form much more easily dealt with. A case in point is presented. CACM February, 1960 Lynch, W. C. CA600210 JB March 22, 1978 2:12 PM 222 4 222 222 4 222 364 4 222 799 4 222 222 5 222 222 5 222 222 5 222 44 5 222 82 5 222