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一、引言 CRT图形显示用来作为计算机的主要外部设备到现在不过十多年的历史,但它的各项技术指标发展非常迅速,其中最重要的指标之一是面线速度和字符书写速度。这是因为用CRT图形显示作为计算机的一种输入输出设备,与使用机电式打印机和绘图仪等设备的速度相比,可以说是一个重大的进步。它解决了计算机所具有的快速运算能力和老式输入输出设备速度不相匹配的矛盾。因此,提高CRT图形显示的速度是CRT图形显示设备研制中的关键问题之一。
I. INTRODUCTION CRT graphic display is used as the main external device of computer to the present ten years of history, but its technical indicators have developed very rapidly. One of the most important indicators is the speed of face line and the writing speed of characters. This is because using a CRT graphic display as a type of I / O device for a computer can be a significant improvement over the speed of using devices such as electromechanical printers and plotters. It solves the contradiction between the computer's fast computing power and the old input-output device speed does not match. Therefore, improving the speed of CRT graphics display is one of the key issues in the development of CRT graphics display devices.