QuickEngine

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 * QuickEngine (original release version) - 1987(first version to ship MS-DOS)
 * QuickEngine 2000 Machine - 1988
 * QuickEngine 2300 Machine - 1988
 * QuickEngine NT (1993-2000, stop producing the QuickEngine NT computers after May 1997)
 * QuickEngine Professional (1996-2009)
 * QuickEngine Professional 14000 - 1996
 * QuickEngine P
 * QuickEngine Paper - 2009 - first Windows 7 multi-touch tablet.
 * QuickEngine Paper E - 2010 -
 * QuickEngine Paper Plus - 2010 -
 * QuickEngine Paper 2 - 2011 -
 * QuickEngine Paper 3 - 2012 - first Windows 8 multi-touch convertible tablet.
 * QuickEngine Paper 4 - 2013 -
 * QuickEngine Paper 4.2 and 4.7 - 2014 -