--mm ch  chi
++000    00000nmm a2200000 a 4500
++090    |a312.93 1234
++245 00 |aPC DIY 網路自己裝|h[computer file]
++250    |a1st ed.
++260    |a台北 :|b旗標,|c民國87 [1998]
++300    |a1 computer disk ;|c5/ in.
++690    |aComputer Studies_電腦