protel电路设计教程

				DRC Rules Export File for PCB: C:\Program Files\Altium\Examples\4 Port Serial Interface\4 Port Serial Interface.PcbDoc
				RuleKind=Width|RuleName=All|Scope=Board|Minimum=10.00
				RuleKind=SolderMaskExpansion|RuleName=SolderMaskExpansion_Mtg|Scope=Board|Minimum=50.00
				RuleKind=ShortCircuit|RuleName=ShortCircuit|Scope=Board|Allowed=0
				RuleKind=Clearance|RuleName=Clearance|Scope=Board|Minimum=10.00
				RuleKind=SolderMaskExpansion|RuleName=SolderMaskExpansion|Scope=Board|Minimum=4.00
				RuleKind=MinimumAnnularRing|RuleName=MinimumAnnularRing|Scope=Board|Minimum=9.00
				RuleKind=MinimumAnnularRing|RuleName=MinimumAnnularRing_Mtg|Scope=Board|Minimum=-90.00
				RuleKind=Width|RuleName=+12V_U/P|Scope=Board|Minimum=18.00
				RuleKind=Width|RuleName=-12V_U/P|Scope=Board|Minimum=18.00
				RuleKind=Width|RuleName=-12V|Scope=Board|Minimum=18.00
				RuleKind=Width|RuleName=GND|Scope=Board|Minimum=18.00
				RuleKind=Width|RuleName=VCC|Scope=Board|Minimum=18.00
				RuleKind=Width|RuleName=+12V|Scope=Board|Minimum=18.00