In this paper, those requirements were reduced by geometrical feature of ellipse, and a method using convex hull and Pascal theorem was proposed.

Pascal theorem turns into Pappus theorem when the curve of second order is degenerated into two straight lines.

The Pappus theorem and Pascal theorem are the important theorems of three points colinearity of degenerate and non degenerate two stage curves respectively.

The paper continuously researches for the properties of the Pascal lines and the Brianchon points ,and numerical measures the Pascal lines and the Brianchon points are numericae measured clearly.

Pascal lines are pretty important in planar algebraic curves.

Automatic Deletion of Subdirectory by Using PASCAL Language;

TO Use The Parameter In Subprogram Of Pascal Language;

This article introduces the relationship between data transfering and resources sharing among computer languages in simple language,based on the examples of Foxbase data base,Gwbasic language and Turbo Pascal language,which supplies an important way to data operating of different computer languages envirnments.

Circuit to fast calculate Pascal triangle data;

The subdivision masks for uniform B-splines and PASCAL triangle;