Operatig System Tutorial Level3
- 1. IT-020-3(3) OPERATING SYSTEM CONFIGURATION Prepared By; willye_83@yahoo.com Prepared By; willye_83@yahoo.com
- 2. What is an Operating System? It has one set of tasks to perform controls the operation of a computer directs the input and output of data keeps track of files controls the processing of computer programs managing the functioning of the computer hardware running the applications programs serving as an interface between the computer and the user and allocating computer resources to various functions Prepared By; willye_83@yahoo.com
- 3. The computer's master control program Prepared By; willye_83@yahoo.com
- 4. How Operating Systems Work An operating system is the most important software that runs on a computer. Prepared By; willye_83@yahoo.com
- 5. What is software? Software is any set of instructions that performs some task on a computer The operating system performs many essential tasks for your computer. -controls the memory needed for computer processes. -manages disk space. -controls peripheral devices. -and allows you to communicate with the computer. Without an operating system, a computer is useless . Prepared By; willye_83@yahoo.com
- 6. An operating system performs the following functions. User Interface Job Management Task Management Data Management Device Management Security Prepared By; willye_83@yahoo.com
- 7. The Operating System's Job Windows Operating System Loading boot your computer VS Prepared By; willye_83@yahoo.com OS Loading Mac OS Loading
- 8. You know what that means? Booting is the process that occurs when press the power button to turn computer on. The operating system loads. In the points: Controlling the way in which the computer functions Responsible for managing the computer's hardware and software resources . Prepared By; willye_83@yahoo.com
- 9. Vista Desktop big share of the operating system market over 90% of computer users have Prepared By; willye_83@yahoo.com
- 10. Mac OS X Desktop almost 7.5% percent of the operating systems market as of March 2008 Mac computers are sleek and modern looking Prepared By; willye_83@yahoo.com
- 11. Desktop Version of Linux Linux is an open source Unlike Windows and Mac OS Linux was started in the 1990s originally created by Linus Torvalds create various versions of the Linux operating system represents under 1% of the market share for home users Prepared By; willye_83@yahoo.com
- 12. Two popular distributions of the software Ubuntu and Red Hat Ubuntu is completely free specifically for home users perfect for laptops, desktops and servers Red Hat is a company offers technical and training support for businesses Prepared By; willye_83@yahoo.com
- 13. You may work on : A Word document print an email And Internet browser open for web surfing These three programs need attention from the (CPU): - To do whatever task that you - The user - Are telling it to do Prepared By; willye_83@yahoo.com
- 14. need memory and storage be able to send messages responsible for handling processor and network management . Prepared By; willye_83@yahoo.com
- 15. Types of Operating Systems Three most common Microsoft Windows, Mac OS X, and Linux Logos Operating systems Prepared By; willye_83@yahoo.com
- 16. Start Menu on Windows User Interface Graphical User Interface (GUI) allows the user to interact with the computer Instead typing a command that tell the computer what to do you can use graphical icons and text on the GUI to instruct the computer to perform a task Operating systems may support optional interfaces Prepared By; willye_83@yahoo.com
- 17. Let's take a look at the graphical user interfaces of three popular operating systems. Microsoft Windows Microsoft created the operating system, Windows, in the mid-1980s. They have a version of the operating system that is designed for the home user, and a professional version, which is intended for businesses. The versions differ in the depth of networking, security, and multimedia support. Prepared By; willye_83@yahoo.com
- 18. Job Management controls the order and time in which programs are run is more sophisticated in the mainframe environment where scheduling the daily work has always been routine job control language (JCL) was developed decades ago Prepared By; willye_83@yahoo.com
- 19. Task Management Multitasking ability to simultaneously execute multiple programs necessary for keeping several applications open at the same time multiple programs can be running at the same time Prepared By; willye_83@yahoo.com
- 21. Data Management keeps track of the data on disk, tape and optical storage devices . application program deals with data by file name and a particular knows where that data are physically stored (which sectors on disk) and interaction between the application and operating system is through the programming interface an application needs to read or write data (API) Prepared By; willye_83@yahoo.com
- 22. Device Management controls peripheral devices requires drivers for the peripherals attached to the computer routine that knows how to deal with each device When a new peripheral is added, device's driver is installed into the operating system Prepared By; willye_83@yahoo.com
- 23. Security provide password protection to keep unauthorized users out of the system maintain activity logs and accounting provide backup and recovery routines Prepared By; willye_83@yahoo.com
- 24. History operating systems were developed in the late 1950s to manage tape storage - (programmers mostly wrote their own I/O routines) In the mid-1960s, operating systems became essential to manage disks - (complex timesharing and multitasking systems) Today, all multi-purpose computers from desktop to mainframe use an operating system. Consumer electronics devices increasingly use an OS. Prepared By; willye_83@yahoo.com
- 25. Common Operating Systems The primary operating systems -Windows (Windows 98, XP, Vista) -Macintosh OS X -Linux -Unix -i5/OS (IBM iSeries) -z/OS (IBM zSeries mainframes) DOS is still used for some applications (special-purpose operating systems) Prepared By; willye_83@yahoo.com
- 26. What is firmware? combination of software and hardware Computer chips that have data or programs recorded on them are firmware Firmware is software that is embedded in a piece of hardware These chips commonly include the following: ROMs (read-only memory) PROMs (programmable read-only memory) EPROMs (erasable programmable read-only memory) - Firmware in PROM or EPROM - firmware upgrade to diskette and flash the BIOS Prepared By; willye_83@yahoo.com
- 27. System and Application Software This diagram shows how the major system software interacts with applications in memory. System software comprises the programs that support the running of applications (operating system, DBMS, TP monitor and access methods). Prepared By; willye_83@yahoo.com
- 29. Binary code Code used in digital computers off and on / usually symbolized by 0 and 1 A binary code signal is a series of electrical pulses that represent numbers, characters, and operations to be performed Prepared By; willye_83@yahoo.com
- 30. Bit BI nary digi T A binary digit smallest element of computer storage single digit in a binary number (0 or 1) magnetic domain on disk or tape The most common is the byte made up of 8 bits and equivalent to one alphanumeric character Prepared By; willye_83@yahoo.com
- 31. ( BI nary digi T ) The smallest element of computer storage. It is positive or negative magnetic spot on disk and tape and charged cell in memory. Prepared By; willye_83@yahoo.com
- 32. transmitted as a pulse of high or low voltage Speed is increased by making the transistors open and close faster Prepared By; willye_83@yahoo.com
- 35. Software Instructions that tell a computer what to do. Software is the entire set of programs, procedures, and routines associated with the operation of a computer system, including the operating system . The term differentiates these features from hardware , the physical components of a computer system. Two main types of software are system software, which controls a computer's internal functioning, and application software, which directs the computer to execute commands that solve practical problems. A third category is network software, which coordinates communication between computers linked in a network. Software is written by programmers in any number of programming languages . This information, the source code, must then be translated by means of a compiler into machine language , which the computer can understand and act on. Prepared By; willye_83@yahoo.com
- 36. For more information visit Britannica.com. Britannica Concise Encyclopedia. Copyright © 1994-2008 Encyclopædia Britannica, Inc. Prepared By; willye_83@yahoo.com
- 37. The End Prepared By; willye_83@yahoo.com
Editor's Notes
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