... most computers use blocks of eight bits, or bytes asthe smallest addressable unit of memory. A machine-level program views memory as a very large array of1.8. SYSTEMS COMMUNICATE WITH OTHER SYSTEMS ... the system easier to use and install.End Aside.1.8 Systems Communicate With Other Systems Using NetworksUp to this point in our tour of systems, we have treated a system as an isolated collection ... copying information from one machine to anotherhas become one of the most important uses of computer systems. For example, applications such as email,instant messaging, the World Wide Web, FTP,...