3 ca-computer system structure
5 ca-memory structuret
1 ca-cpu structure (wichet p.'s conflicted copy 2012-12-17)
2 ca-computer systems (wichet p.'s conflicted copy 2012-12-18)
9 ca-io systems structure (wichet p.'s conflicted copy 2012-12-17)
4 ca-process structure
