The aim of the reserach is to develop a PC based courseware which is programed to drafts clothing patterns. The pattern making methods are numerically formulized. The of the program were as follows; 1.Menu and instructions are displayed in Korean Language. 2.Easy step-by-step instructions explaining how to draw basic pattern and design pattern. 3.Low cost personal computer and general purpose printer are used. The source program was writtern in C-language and compiled using Turbop C. The Bezier spline is used to draw curves of pattern and to display Korean characters and pattern on same screen simultaneously, Korean characters are drawn graphically. The low cost EBM Personal Computer of compatibles with Hercules Graphic Cark is required to run this grogram.