this software draws NC program (NC data) used with a machine tool soft. NC program is a fraise system. The coordinates of XYZ are drawn. In a single step function, NC program and its locus are drawn synchronously. A single step function is performed by a tap. The pinch performs expansion and reduction. A drug performs movement. Drawing speed can be changed by a seek bar. The starting point of the drawn line, a terminal point, the circle central point, and a radius are displayed. A menu has CLEAR", "Setting", and "CLOSE." A screen is cleared by "CLEAR." A drawing color etc. are set up by "Setting." Application is cleared by "CLOSE." The code and address which can be drawn are as follows. Code: G00, G01, G02, G03, G17, G18 and G19, G54-G59, G92 and G90, G91 *[G54-G59, and G92] are taken as the starting point of drawing. Address: IJK, R, XYZ