一种U盘的Protel格式的电路原理图。

				Protel Design System Design Rule Check
				PCB File : \Protel DXP 2004\Design\chapter13\U盘电路设计.PCBDOC
				Date     : 2005-5-22
				Time     : 16:21:22
				
				Processing Rule : Width Constraint (Min=0.2mm) (Max=0.3mm) (Preferred=0.3mm) (InNet('VCC') Or InNet('VUSB') Or InNet('GND'))
				Rule Violations :0
				
				Processing Rule : Hole Size Constraint (Min=0.0254mm) (Max=2.54mm) (All)
				Rule Violations :0
				
				Processing Rule : Height Constraint (Min=0mm) (Max=25.4mm) (Prefered=12.7mm) (All)
				Rule Violations :0
				
				Processing Rule : Width Constraint (Min=0.2mm) (Max=0.3mm) (Preferred=0.2mm) (All)
				Rule Violations :0
				
				Processing Rule : Clearance Constraint (Gap=0.2mm) (All),(All)
				Rule Violations :0
				
				Processing Rule : Broken-Net Constraint ( (All) )
				Rule Violations :0
				
				Processing Rule : Short-Circuit Constraint (Allowed=No) (All),(All)
				Rule Violations :0
				
				
				Violations Detected : 0
				Time Elapsed        : 00:00:05