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一、显示器技术的发展和最新技术 回顾显示器发展的历史,大体可分为三个阶段。 1.TTL显示器阶段 所谓TTL显示器是指用TTL信号(即数字信号)传送红、绿、蓝三基色,因而也叫数字式显示器。由于数字信号只有0、1两种状态,因而可表达的颜色种类十分有限,此阶段最有代表性的显示器有CGA显示器(Colour Graphics Adapter)以及EGA显示器(Enhanced Graphics Adapter)。CGA显示器同时在屏幕上显示的颜色种类只有4种,图像分辨率为320×200,行频为固定的15.8KHz;EGA显示器同时在屏幕上显示的颜色种类也只有16种,分辨率最高也只有640×350,行频为15.8KHz或21.8KHz。
First, the development of display technology and the latest technology Review Monitor the history of the development can be broadly divided into three stages. 1. TTL display stage The so-called TTL display refers to the use of TTL signals (ie, digital signals) to send red, green and blue primary colors, which are also called digital displays. As the digital signal only 0,1 two states, which can be expressed in a very limited variety of colors, the most representative of this stage of the monitor with the CGA display (ColorGraphicGame Adapter) and the EGA display (EnhancedGraphicsGraphics). CGA display on the screen at the same time there are only four kinds of colors, the image resolution of 320 × 200, the line frequency is fixed 15.8KHz; EGA display at the same time on the screen only 16 kinds of colors, the highest resolution only 640 × 350, the line frequency is 15.8KHz or 21.8KHz.