Wednesday, February 25, 2009

Term One 2009 Session 2 Resolution

(UPDATE Aug 2012 - I have removed images that won't display correctly but will leave the text here as reference)

Term One 2009 Session 2
"The display resolution of a digital television or computer display typically refers to the number
of distinct pixels in each dimension that can be displayed. It can be an ambiguous term especially
 as the displayed resolution is controlled by all different factors in cathode ray tube (CRT)
and flat panel or projection displays using fixed picture-element (pixel) arrays.
One use of the term "display resolution" applies to fixed-pixel-array displays such as plasma
display panels (PDPs), liquid crystal displays (LCDs), digital light processing (DLP) projectors,
or similar technologies, and is simply the physical number of columns and rows of pixels
creating the display (e.g., 1280×1024). A consequence of having a fixed grid display is that
for multiformat video inputs all displays need a "scaling-engine" (a digital video processor that
includes a memory array) to match the incoming picture format to the display.
Note that the use of the word resolution here is misleading. The term "display resolution" is
 usually used to mean pixel dimensions (e.g., 1280×1024), which does not tell anything about
the resolution of the display on which the image is actually formed (which would typically be
 given in pixels per inch (digital) or number of lines measured horizontally, per picture height (analog))."
Below are some examples of various resolutions eg PAL (Normal TV) 768x576 pixels

For lots about printers try