1. 
   PCX
   PCX is an image file format developed by the now-defunct ZSoft Corporation of Marietta, Georgia. It was the native file format for PC Paintbrush (PCX = "Personal Computer eXchange") and became one of the first widely accepted DOS imaging standards, although it has since been succeeded by more sophi...
   Found op http://en.wikipedia.org/wiki/PCX
   
   
2. 
   PCX
   Picture Exchange format. File format used by many painting packages including PC Paintbrush.
   Found op http://www.doconsite.co.uk/directorypages/Reference/Glossary.htm
   
   
3. 
   PCX
   An outdated graphics format, originated as a memory dump of the screen RAM on a PC. This is a bitmap file format that is commonly supported, but not often actually used.
   Found op http://www.encyclo.co.uk/local/20829
   
   
4. 
   pcx
   (filename extension) A filename extension for images created with the IBM PC Paintbrush tool. [Format?] (1995-12-10)
   Found op http://foldoc.org/pcx
   
   

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