Computer Software

Computer Software - Computer Software Computer Software...

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Computer Software Computer Software
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Software Categories
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Operating System Activities
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Operating System Activities o Multitasking allows two or more tasks, jobs, or programs to run simultaneously o Within a single program, multithreading allows multiple parts, or threads, to run simultaneously o An operating system’s multiprocessing capability supports a division of labor among all the processing units
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User Interfaces o The combination of hardware and software that helps people and computers communicate with each other
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DOS o Disk Operating System o First operating system that many used
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The Kernel Core of the OS Memory resident – remains in memory while the computer is running Tasks Manages memory and devices Maintains computer’s clock Starts applications Assigns resources
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The Boot Process Booting: Process of starting or restarting a computer Warm boot from Windows desktop Cold boot from system unit
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The Boot Process How does a personal computer boot up? Step 1 . Power supply sends signal to  components in system unit Step 4 .  Results of POST are  compared with data in CMOS  chip Step 2 computer Step 3 . BIOS runs tests, called  the POST, to check  components such as mouse,  keyboard, and adapter cards
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Computer Software - Computer Software Computer Software...

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