digital-computer public under computer 41 List Picture As a command %3 n0 digital-computer n2 file-server n0->n2 n3 mainframe-computer n0->n3 n4 personal-computer n0->n4 n5 bulletin-board-system n0->n5 n6 minicomputer n0->n6 n7 multiprocessor n0->n7 n8 von-neumann-machine n0->n8 n1 computer n1->n0