一概述随着微电子技术及超大规模集成电路工艺的飞速发展,以及显示设备制造技术的不断提高,微机技术的发展已到了日新月异的地步。而作为构成微机的主要部件之一的显示适配器(卡),也一样得到了迅猛的发展。近年来图形加速卡从内部32位数据总线发展到64位,从单一的图形加速显示发展到了带有软回放解压功能(支持MPEG 1),到了1996年又发展到了带TV输出功能,可以直接连接NTSC或PAL制式的彩色电视机。近期又发展到了三维立体画面阶段,图形的像素也不断扩大,目前有高达1600*1200像素的解析度,显示的色彩可高达16.8M色,至于如绿色节能功能、图形显示加速、即插即用(PnP)等这些基本的功 I. INTRODUCTION With the rapid development of microelectronic technology and very large scale integrated circuit technology and the continuous improvement of display device manufacturing technology, the development of microcomputer technology has reached a new stage of development. And as one of the main components constitute the computer display adapter (card), also have been the rapid development. In recent years, the graphics accelerator has evolved from an internal 32-bit data bus to 64 bits, evolving from a single graphics acceleration display to a soft playback decompression function (MPEG 1 support). In 1996, it also developed a TV output function that allows direct connection NTSC or PAL color TV. The recent development of the three-dimensional screen phase, the graphics pixels are also expanding, there are currently up to 1600 * 1200 pixel resolution, the display color up to 16.8M color, as the green energy-saving features, graphics display acceleration, plug and play (PnP) and other basic work