说明：  51单片机在微型智能控制系统中应用很广,随着人们对控制系统的要求不断提高, 51 单片机的功能局限越发明显。特别是51系列单片机不具有实时多任务支持功能,大大限制其在控制系统中的进一步发展。而多任务恰恰是现代操作系统的突出特点,将多任务机制引入 单片机系统。
(It is exciting that, today,laptops have 3D acceleration, and OpenGL is truly everywhere and on every mainstream computing platform. Even more exciting, however, is the continuing evolution of computer graphics hardware. )