There are two types of central air conditioning systems: Direct Expansion (DX) type of central air condition plants and Chilled Water type of the central air conditioning plants. This article describes the DX central air conditioning system.
Ghostscript is a suite of software based on an interpreter for Adobe Systems' PostScript and Portable Document Format (PDF) page description languages. Its main purposes are the rasterization or rendering of such page description language files, for the display or printing of document pages, and the conversion between PostScript and PDF files.
Some of them, in a random order, are: 1  Ghostscript (really the classical answer) 2  GIMP. Large, but handles just about everything (but needs Ghostscript anyway). 3  Photoshop. Also quite large.  EPS viewer (Which is the first link I got when I Googled on win7 EPS viewer).