Does a large display have more pixels? Not necessarily. Take the case of large screen HD TVs for instance. HD Televisions are available in a variety of sizes from a mere 19 inch all the way up to five ft. and more. However, if marked HD 1080i, each shares one common feature. They are all capable of displaying a resolution of 1920 X 1080 pixels which is the 1080i/p standard. During the past 8 years well over a million people have visited our discussion and explanation of the relationship of pixels to various units of measure. In the US, the most common measure is the inch of course, therefore, the phrase "pixels per inch" has become a natural part of our language. As the internet, Television and PC display techonology has evolved, advertisers and consumers alike have relied heavily on the term to distinguish between similar products. Likewise, "pixels per centimeter" (PPCM) is the common term used in regions where the metric system is more recognizable

Both these terms share the same math relationship in that both are simply a way to express the resolution or pixel density of a device of a certain width and height. In general, a high density of pixels is more desireable and typically denotes a better-made, perhaps more expensive device.

One thing that has made the job of explaining the relationship between pixels and units of measure much easier is the advent of the giant screen digital Television In the past, the physical size of common high-resolution displays was not much different from their low-res counterparts. A few years ago, most of us had never seen a digital Television Screen of the immense physical size that is so common today. But today, Everyone has seen the diverse physical difference between various Hi-Def televisions. It provides a great starting point for understanding the concept of "pixels" as the term relates to physical measure.

Consider this example -