With the advent of global networks such as the

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Unformatted text preview: another I/O device, as shown in Figure 1.14. When the system copies a sequence of bytes from main memory to the network adapter, the data flows across CPU chip register file PC ALU system bus memory bus main memory Expansion slots I/O bus USB controller mouse keyboard graphics adapter monitor disk network disk controller network adapter memory interface I/O bridge Figure 1.14: A network is another I/O device. the network to another machine, instead of say, to a local disk drive. Similarly, the system can read data sent from other machines and copy this data to its main memory. With the advent of global networks such as the Internet, copying information from one machine to another has become one of the most important uses of computer systems. For example, applications such as email, instant messaging, the World Wide Web, FTP, and telnet are all based on the ability to copy information over a network. Returning to our hello example, we could use the familiar telnet application to run hello on a remote machine. Suppose we use a teln...
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This note was uploaded on 09/02/2010 for the course ELECTRICAL 360 taught by Professor Schultz during the Spring '10 term at BYU.

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