Batch System

The Second Generation (1955-65) Transistors and Batch Systems
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The Second Generation (1955-65) Transistors and Batch Systems

The introduction of the transistor in the mid-1 950s changed the picture drastically. Computers became reliable enough that they could be manufactured and sold to paying customers with the hope that they would continue to function long enough to get some

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

RESEARCH ON OPERATING SYSTEMS
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RESEARCH ON OPERATING SYSTEMS

Computer science is a speedily advancing field and it is difficult to predict where it is going. Researchers at universities and industrial research labs are continually thinking up new ideas, some of which go nowhere but some of which become the cornerstone of future

METRIC UNITS / SUMMARY
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METRIC UNITS / SUMMARY

To avoid any confusion, it is worth stating certainly that in this blog, as in computer science generally metric units are used instead of traditional English units (the furlong-stone-fortnight

Process Creation
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Process Creation

Operating systems require some way to make processes. In very simple systems, or in systems designed for running only a single application (e.g., the controller in a microwave oven), it may be possible to have all the processes that will ever be needed be present when

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