This article is from the alt.comp.hardware.homebuilt Frequently Asked Questions. It is maintained by Mark Sokos (msokos1@gl.umbc.edu) with many contributions from others.
Most semiconductor manufacturers use this format for data sheets. A PDF viewer (Acrobat Reader) may be obtained from http://www.adobe.com. Many semiconductor manufacturers either link to Adobe or have local copies of the viewer on their own sites.
A freeware pdf viewer for Xwindows systems is also available, do a search for xpdf. This is useable for systems they haven't ported acrobat to, even homebuilt ones.
 
Continue to: