How the computer actually attaches to the coax cable is more complicated than just the simple dot shown in Fig. 23.9.2. There is a network controller card as shown in Fig. 23.9.2 that plugs into the main system bus of the computer and is also attached to a cable that plugs into the coax cable. Thus the network is treated just like any other peripheral and device drivers are inserted into the operating system to allow the computer to send and receive streams of bits over the wire.