These are the other web sites which are related to our information.  They are also introducing about the methods of error detection.  If you are interested, please click on them for a visit.

http://www.cadvision.com/blanchas/intro_to_data_com/

http://www.its.bldrdoc.gov/fs-1037/dir-011/_1584.htm

http://www.its.bldrdoc.gov/fs-1037/dir-030/_4478.htm

http://www.its.bldrdoc.gov/fs-1037/dir-021/_3124.htm

http://www.its.bldrdoc.gov/fs-1037/dir-039/_5774.htm

http://www.computeruser.com/resources/dictionary/definition.html?lookup=5607