In the Modern Physics of the XXI Century the STRING play the role that the ATOM used to play for more than 2000 years To begin with we adopt a framework to encompass valid theories and data of the real world. The whole process is described as an example model which takes four Chapters and one Appendix. Then is applied standard Numeric Computational Engineering modeling techniques to compute strings, stream of strings, strings of radiation, strings of four types of forces, strings of sub particles, strings of particles, strings of all elements of the Periodic Table, to end up with a proposed structure of the atomic nucleus from the bottom of the Planck Scale up to the macro scale, chemistry, and its significance to Cosmology. There was no found prior intent to present physical characteristic of strings and was assumed that it would be of value to continue modeling what best is known of the structure of matter. This process and its results are worth to analyze, not only because provides non-symbolic solution to problems but the emergence of new equations and formulas will be over time of generalized use. Physicists are aware of the limitations of symbolic string and super string theories, then modeling as engineers do could be of great importance, even if it is a step to perfection. The attraction of numerical computations resides in its simplicity and finality to prove truth.