[问题]

[小兔]

Can someone tell the difference between pixel and Dots per inch? it's going to be show on my computer exam.

 

[小傻]

Is there any difference?

 

[大熊猫]

这个问题你说得不太清楚。如果指的是显示器的像素（pixel）和点距的点（dot），问题应该是这样的。
严格的说dot这个定义只有荫罩式显像管（shadow mask）才有，对于sony特里龙，三菱钻石龙来说，他们是荫栅式显像管（aperture grill ）没有点（dot）,只有栅（stripes）。拿荫罩式显像管来说，由红、绿、蓝（R、G、B）三个相邻荧光点才构成一个彩色的荧光像素（不是像素），也就是说3个dots组成了一个荧光像素，而显示器的显示分辨率是根据显示卡设置来的，所以实际的像素可能根荧光像素一样，也可能不一样。而点距指的是一个荧光点到距离它最近的同色荧光点间的直线距离。

 

[wen]

pixel： The smallest resolvable rectangular area of an image, either on a screen or stored in memory. Each pixel in a monochrome image has its own brightness, from 0 for black to the maximum value (e.g. 255 for an eight-bit pixel) for white. In a colour image, each pixel has its own brightness and colour, usually represented as a triple of red, green and blue intensities

dot; Single pixel on a matrix display. Single small dot on a dot matrix printer print out.

 

[大熊猫]

这个小兔说的可能是wen指的这个.
我白说了。