Computer Operating Systems Computer Hardware Servicing NC II Guevarra Institute of Technology Gingoog City, Philippines

A. Definition “An operating system, or OS, is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system, a computer would be useless” ( ‘Operating System 2009’)

“An operating system, or OS, is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system, a computer would be useless” ( ‘Operating System 2009’)

A layer of software that manages processors, memory, disks, printers, keyboard , display, network interfaces , input/output devices and provide user programs with a simpler interface to the hadware. ( Tanendaum )

A layer of software that manages processors, memory, disks, printers, keyboard , display, network interfaces , input/output devices and provide user programs with a simpler interface to the hadware. ( Tanendaum )

http://www.comptechdoc.org/basic/basictut/osint.gif

B. Types ( ‘Operating System 2009’) GUI - Short for Graphical User Interface, a GUI Operating System contains graphics and icons and is commonly navigated by using a computer mouse.

GUI - Short for Graphical User Interface, a GUI Operating System contains graphics and icons and is commonly navigated by using a computer mouse.

Examples of GUI OS System 7.x http://www.computerhope.com/macos.htm

System 7.x

2. Multi-user - A multi-user operating system allows for multiple users to use the same computer at the same time and/or different times.

2. Multi-user - A multi-user operating system allows for multiple users to use the same computer at the same time and/or different times.

Examples of Multi User Linux http://www.pcstats.com/articleimages/200503/linux2_susemain.jpg

Linux

2. Unix http://mitglied.lycos.de/deloreswims32/images/1-1024x768.jpg

2. Unix

3. Windows 2000 http://www.intelliadmin.com/images/Windows%202000%20Screen%20Shot.jpg

3. Windows 2000

3. Multiprocessing – An operating system capable of supporting and utilizing more than one computer processor. Below are some examples of multiprocessing operating systems. LinuxUnix Windows 2000

3. Multiprocessing – An operating system capable of supporting and utilizing more than one computer processor. Below are some examples of multiprocessing operating systems.

LinuxUnix Windows 2000

4. Multitasking - An operating system that is capable of allowing multiple software processes to run at the same time. Below are some examples of multitasking operating systems. Unix Windows 2000

4. Multitasking - An operating system that is capable of allowing multiple software processes to run at the same time. Below are some examples of multitasking operating systems.

Unix Windows 2000

5.Multithreading - Operating systems that allow different parts of a software program to run concurrently. Operating systems that would fall into this category are: LinuxUnix Windows 2000

5.Multithreading - Operating systems that allow different parts of a software program to run concurrently. Operating systems that would fall into this category are:

LinuxUnix Windows 2000

C. Operating System Listing Here is a listing of many of the different types of operating systems available today, the dates they were released, the platforms they have been developed for and who developed them.

Here is a listing of many of the different types of operating systems available today, the dates they were released, the platforms they have been developed for and who developed them.

D. Troubleshooting Common questions and answers to operating systems in general can be found on the below operating system question and answers . All other questions relating to an operating system in particular can be found through the operating system page.

Common questions and answers to operating systems in general can be found on the below operating system question and answers . All other questions relating to an operating system in particular can be found through the operating system page.

Linux / Variants MacOS MS-DOS IBM OS/2 Warp Unix / Variants Windows CE Windows 3.x Windows 95 Windows 98Windows 98 SE Windows ME Windows NT Windows 2000 Windows XP Windows Vista

Linux / Variants MacOS MS-DOS IBM OS/2 Warp Unix / Variants Windows CE Windows 3.x Windows 95 Windows 98Windows 98 SE Windows ME Windows NT Windows 2000 Windows XP Windows Vista

References 'Operating Systems' 2009, Computer Hope , viewed 18 June 2009 http://www.computerhope.com/os.htm Tanenbaum, A., Modern Operating Systems , Prentice Hall.

'Operating Systems' 2009, Computer Hope , viewed 18 June 2009 http://www.computerhope.com/os.htm

Tanenbaum, A., Modern Operating Systems , Prentice Hall.