Timesharing Systems

THE OPERATING SYSTEM ZOO
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THE OPERATING SYSTEM ZOO

Operating systems have been around now for over half a century. During this time, quite a variety of them have been developed, not all of them broadly known. In this section we will

Client-Server Model / Virtual Machines
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Client-Server Model / Virtual Machines

A small variation of the microkernel idea is to differentiate two classes of processes, the servers, each of which gives some service, and the clients, which use these services. This model is known as the client-server model. Sometimes the lowest layer is a microkernel, but

VM/370
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VM/370

This system, initially called CP/CMS and later renamed VM/370 (Seawright and MacKinnon, 1979), was based on an astute observation: a timesharing system provides (1)

THIN CLIENTS
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THIN CLIENTS

For many years, the main computing model has oscillated between centralized and decentralized computing. The first computers, such as the ENIAC, were, in fact, personal computers, albeit large ones, because only one person could use one at once. Then came timesharing

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