Personal Computer

Multiprocessor Operating Systems
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Multiprocessor Operating Systems

An increasingly general way to get major-league computing power is to connect multiple CPUs into a single system. Depending on exactly how they are attached and what is shared,

Handheld Computer Operating Systems
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Handheld Computer Operating Systems

Continuing on down to smaller and smaller systems, we come to handheld computers. A handheld computer or PDA (Personal Digital Assistant) is a small computer that fits in a shirt

The Shell
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The Shell

The operating system is the code that carries out the system calls. Editors, compilers, assemblers, linkers, and command interpreters certainly are not part of the operating system, even though they

SYSTEM CALLS
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SYSTEM CALLS

Operating systems have two major jobs: providing abstractions to user programs and managing the computer's resources. Mostly, the interaction between user programs and the

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