What are the illustration and computation?

The English word 'computation' has a couple of uses: 1: problem solving that involves numbers or quantities; 2: the procedure of calculating; determining something by mathematical or logical methods

Illustration is about making visual sense and communicating lucidly to an audience. It is about expanding ideas, providing visual explanation, comment or decoration using a whole range of media and...

it can mean somthing as simpel as picture. for more check out wikipedia: http://en.wikipedia.org/wiki/Illustration

A quantum computer is a computer that uses storage devices called quibits rather than bits to store data as either a 1 or a 0 however they use a part of quantum theory in regards to superposition...

It probably means the action of mathematical calculation.