使用OLED显示器作为显示设备。有效果显示区域为128X48点阵，调用函数接口，实现了画点、画线、画圆、多边形、窗体等等功能。-As a display device using the OLED display. Be effective for the 128X48 dot matrix display area, call the function interface, implements the drawing point, drawing a line, circle, polygo