Protel画完原理图检查的时候出现了这些错误 #1 Error Multiple Net Identifiers

Error Report For : Documents\Sheet1.Sch    24-Aug-2009  14:58:43

 #1 Error  Multiple Net Identifiers : Sheet1.Sch VCC At (290,920) And Sheet1.Sch GND At (290,700)
 #2 Error  Multiple Net Identifiers : Sheet1.Sch 17 At (1330,730) And Sheet1.Sch ADDRESS3 At (1340,730)
 #3 Error  Multiple Net Identifiers : Sheet1.Sch BTY At (1350,710) And Sheet1.Sch 15 At (710,580)
 #4 Warning   Unconnected Net Label On Net PFI
    Sheet1.Sch PFI

 #5 Warning   Unconnected Net Label On Net PFO
    Sheet1.Sch PFO

 #6 Warning   Unconnected Net Label On Net RESET
    Sheet1.Sch RESET

 #7 Error  Multiple Net Identifiers : Sheet1.Sch MR At (1240,890) And Sheet1.Sch WDO At (1340,890)

End Report

123 应该是你命名命重复了 同一个网络 你定义了VCC 又定义了GND 通常可能你放电源或地的时候忘记改名字了
456 应该是你的这三个网络没有实际的连接 是不是忘记连接管教了或者就是多出来的删掉就可以了
最后一个看着还是同样123的问题 回到原理图中 有错误标记的 你仔细看看多半都可以解决的