Operating_Systems

Operating_Systems - Operating Systems and Utility Programs...

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Operating Systems and  Utility Programs Mac OS X DOS Windows XP
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Lecture Objectives Identify the types of system software Summarize the startup process on a personal computer Discuss ways that some operating systems help administrators control a network and administer security Explain the purpose of the utilities included with most operating systems Summarize the features of several stand-alone operating systems Identify various network operating systems Identify devices that use several embedded operating systems Explain the purpose of several stand-alone utility programs Next Describe the functions of an operating system Use the Unix OS to manage your Astro files at Temple
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Operating Systems What are the functions of an operating system ? Next p. 392 Fig. 8-1 monitor performance provide a user interface provide file management and other utilities establish an Internet connection control a network administer security start the computer manage programs schedule jobs and configure devices manage memory
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Operating System Functions What messages display on the screen when you boot the computer? Next p. 394 Fig. 8-3
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Operating System Functions How does a personal computer boot up? Next p. 395 Fig. 8-4 Step 1. Power supply sends signal to com- ponents in system unit Step 4. Results of POST are compared with data in CMOS chip Step 2. Processor accesses BIOS to start computer Step 3. BIOS runs tests, called the POST , to check components such as mouse, keyboard, and adapter cards Step 5. BIOS looks for system files in floppy disk drive or CD/DVD drive, and then hard disk Step 6. Kernel (core) of operating system loads into RAM Step 7. Operating system loads configuration information and displays desktop on screen
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Operating System Functions What is a recovery disk ? Next p. 397 Fig. 8-5 Step 1. Click Start button on taskbar, point to All Programs on Start menu, point to Accessories on All Programs submenu, point to Systems Tools on Accessories submenu, and then point to Backup. Step 2.
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Operating_Systems - Operating Systems and Utility Programs...

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