什么图形卡? [英] what graphic card does?

问题描述

嗨 我知道在ram的某些地方有视频内存，而cpu使用它在监视器上显示信息，那么什么图形卡呢?图形卡用于什么?

解决方案

图形卡将显示信息的软件请求转换为监视器可以解释的信号类型:基本上是扫描线" :对于屏幕上的每个像素，此级别为红色，该级别为绿色，另一级别为蓝色"，然后是下一条扫描线"标记，并在整个屏幕上重复.

屏幕对文本或图形一无所知，只了解电信号形式的像素信息.

Wiki可以帮助您:图形卡 [ ^ ]

hi i know that some where in ram there is video memory and cpu use it to show information on the monitor,so what graphic card does? and what is graphic card for?

解决方案

The graphics card translates the software requests to show information into the kind of signals that the monitor can interpret: basically "scan lines": "This level Red, That level Green, The other level Blue" for each pixel across the screen, then a "next scan line" marker, and repeat for the whole screen.

The screen knows nothing about text or graphics, it just understands pixel information, in the form of electrical signals.

Wiki can help : Graphics card[^]

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