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For system administrators

再来解决最后一个问题：每个像素再FrameBuffer中，占据多少位BPP(Bits Per Pixels)？ 前面的LCD引脚功能图里，R0-R7、G0-G7、B0-B7，每个像素是占据3*8=24位的，即硬件上LCD的BPP是确定的。 虽然LCD上的引脚是固定的，但我们使用的时候，可以根据实际情况进行取舍，比如我们的JZ2440使用的是16BPP，因此LCD只需要R0-R4、G0-G5、B0-B4与SOC相连，5+6+6=16BPP，每个像素就只占据16位数据。

我们写程序的思路如下： 1. 查看LCD芯片手册，查看相关的时间参数、分辨率、引脚极性； 2. 根据以上信息设置LCD控制器寄存器，让其发出正确信号； 3. 在内存里面分配一个FrameBuffer，在里面用若干位表示一个像素，再把首地址告诉LCD控制器；

之后LCD控制器就能周而复始取出FrameBuffer里面的像素数据，配合其它控制信号，发送给电子枪，电子枪再让在LCD上显示出来。以后我们想显示图像，只需要编写程序向FrameBuffer填入相应数据即可，硬件会自动的完成显示操作。

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For developers

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<translate> Architecture</translate>

<translate> An overview of the key parts of MediaWiki's source code.</translate>

模板:Ll | 模板:Ll | <translate> Doxygen-generated documentation</translate>

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<translate> Details about the database architecture used by MediaWiki.</translate>

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<translate> An overview of the ways to create a new MediaWiki extension.</translate>

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<translate> Web access</translate>

<translate> Details about query string parameters that can be passed to MediaWiki access scripts.</translate>

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Others

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<translate> Frequently asked questions about MediaWiki.</translate>

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Browsing the manual

There are multiple ways to browse through the documentation.</translate> <translate> Readers having trouble finding a particular topic in the section above may find the following ways of browsing to be helpful. </translate>

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Improving the manual

• There are still a lot of holes in this manual!</translate> <translate> See the [[<tvar|todo>Special:MyLanguage/Manual:Contents/To do</>|'to do' page]] for details.</translate>

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• Project:Manual is a place to discuss and co-ordinate the development of the Manual: namespace.</translate>

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• See also <tvar|issues>Project:Current issues</>.

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