... MB or larger (Windows 2000: 256 MB)Windows XP: 256 MB or larger (Windows XP)Windows 7: 256 MB or larger (Windows 7)Hard DiskHard disk ... .Meawhile, the writing pen can be used for writing on any screen in a traceless manner, realizing dust-free ... practical writing sequence.Support functions of film recording, image capturing tool, clock, angle gauge,triangle, compasses, rectilinear scale,etc.Support ...