logging in or signing up Oprating System sawanprasad Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 494 Category: Education License: All Rights Reserved Like it (2) Dislike it (0) Added: July 23, 2010 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: rotgo7 (15 month(s) ago) please mail me this presentation on rotgo7@gmail.com. i am third year engg student . this will help me a lot Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Operating SystemPrasad Sawant . MIT'S, MACS college, Pune. : Operating SystemPrasad Sawant . MIT'S, MACS college, Pune. Architecture of Computer System : Architecture of Computer System Detail Layered View of Computer : Detail Layered View of Computer System Software, Application Software and Driver Programs : System Software- Performs essential operation tasks Operating system Utility programs Application Software - Performs specific tasks for users Business application Communications application Multimedia application Entertainment and educational software Driver Programs (Device Driver) small program that allows a specific input or output device to communicate with the rest of the computer system System Software, Application Software and Driver Programs 3 type of programs : 3 type of programs user / application programs programs used by the users to perform a task system programs an interface between user and computer driver programs communicate I/O devices with computer Hierarchy of computer software : Hierarchy of computer software Program Hierarchy : Program Hierarchy User 1 User 2 User 3 User n ............. electronic computer text editor database system spreadsheet game Operating System Computer Hardware Operating System : Operating System a collection of programs which control the resources of a computer system written in low-level languages (i.e. machine-dependent) an interface between the users and the hardware when the computer is on, OS will first load into the main memory Basic functions of the operating system : Operating System Device configuration Controls peripheral devices connected to the computer File management Transfers files between main memory and secondary storage, manages file folders, allocates the secondary storage space, and provides file protection and recovery Memory management Allocates the use of random access memory (RAM) to requesting processes Interface platform Allows the computer to run other applications Basic functions of the operating system Other function of Operating System : Other function of Operating System best use of the computer resources provide a background for user’s programs to execute display and deal with errors when it happens control the selection and operation of the peripherals act as a communication link between users system protection Common Operating Systems and Their Differences : Common Operating Systems and Their Differences Network Operating System UNIX / Linux / MS Windows2000 Server Desktop Operating System MS Windows 9X/Me / Mac OS / DOS Mobile Operating System Palm OS and Pocket PC Examples : Examples Common operating systems WINDOW used in IBM compatible microcomputers UNIX multi-user, multi-tasking OS used in minicomputers and microcomputers VAX/VMS used in DEC’s VAX series of minicomputers DOS interface : DOS interface GUI : GUI Different Types of Operating System : Different Types of Operating System Cross-Platform Issues : Cross-Platform Issues Cross-Platform developing software for, or running software, on more than one type of operating platform. Machine-independent Programming Languages JVM Makeup Languages HTML XML Advantages cost-effective saves time develop the program on different computers Disk Operating System (DOS) : Disk Operating System (DOS) a part of operating system to control disk operation 2 parts small system data keep track of key information of the disk data area where data file is stored SMALL SYSTEM AREA in DOS : SMALL SYSTEM AREA in DOS 3 parts boot/boot record i.e. a short program for loading DOS into computer’s memory file allocation table (FAT) i.e. record the status of each part of the disk and keep track of all data root directory i.e. record the filename, size of the file , date and time Good Operating System : Good Operating System efficient time spent to execute its programs should be short small in size memory occupied should be as small as possible reliable Type of Operating System : Type of Operating System Batch processing Real time processing Time sharing processing Batch processing : Batch processing Jobs, together with input data, are fed into the system in a batch. The jobs are then run one after another. No job can be started until previous job is completed Real time processing : Real time processing immediate response is needed. For example anti-missile defense system airplane landing control system interrupt error in computer system Time sharing processing : Time sharing processing Each user is given a time slice to interact with the CPU. The size of the time slice will depend on the system. Each user is served in sequence. Special Features of OS : Special Features of OS multi-tasking multi-programming parallel processing buffering spooling Multi-tasking : Multi-tasking to handle 2 or more programs at the same time from a single user ‘s perception CPU can only perform one task at a time, however, it runs so fast that 2 or more jobs seem to execute at the same time Multi-programming : Multi-programming 2 or more programs store in the main memory at the same time when one job reeds to wait (e.g. I/O operation), CPU switch to another job to execute when the first job finishes waiting, CPU will get back the first job to execute Parallel Processing : Parallel Processing use 2 or more CPUs to handle jobs computer networking Job 1 Job 2 Job 3 Job 4 Job 1 Job 2 Job 3 Job 4 CPU 1 CPU 2 CPU 1 time time without multiprocessing with multiprocessing Buffering : Buffering a temporary storage area (buffers) to read data from input device or send data to the output device keep CPU busy because I/O operation is slow Spooling : Spooling a larger buffer from hard disk buffer store the data through I/O operation because I/O operation is slow and CPU operation is fast Slide 31: Thank You You do not have the permission to view this presentation. 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Oprating System sawanprasad Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 494 Category: Education License: All Rights Reserved Like it (2) Dislike it (0) Added: July 23, 2010 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: rotgo7 (15 month(s) ago) please mail me this presentation on rotgo7@gmail.com. i am third year engg student . this will help me a lot Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Operating SystemPrasad Sawant . MIT'S, MACS college, Pune. : Operating SystemPrasad Sawant . MIT'S, MACS college, Pune. Architecture of Computer System : Architecture of Computer System Detail Layered View of Computer : Detail Layered View of Computer System Software, Application Software and Driver Programs : System Software- Performs essential operation tasks Operating system Utility programs Application Software - Performs specific tasks for users Business application Communications application Multimedia application Entertainment and educational software Driver Programs (Device Driver) small program that allows a specific input or output device to communicate with the rest of the computer system System Software, Application Software and Driver Programs 3 type of programs : 3 type of programs user / application programs programs used by the users to perform a task system programs an interface between user and computer driver programs communicate I/O devices with computer Hierarchy of computer software : Hierarchy of computer software Program Hierarchy : Program Hierarchy User 1 User 2 User 3 User n ............. electronic computer text editor database system spreadsheet game Operating System Computer Hardware Operating System : Operating System a collection of programs which control the resources of a computer system written in low-level languages (i.e. machine-dependent) an interface between the users and the hardware when the computer is on, OS will first load into the main memory Basic functions of the operating system : Operating System Device configuration Controls peripheral devices connected to the computer File management Transfers files between main memory and secondary storage, manages file folders, allocates the secondary storage space, and provides file protection and recovery Memory management Allocates the use of random access memory (RAM) to requesting processes Interface platform Allows the computer to run other applications Basic functions of the operating system Other function of Operating System : Other function of Operating System best use of the computer resources provide a background for user’s programs to execute display and deal with errors when it happens control the selection and operation of the peripherals act as a communication link between users system protection Common Operating Systems and Their Differences : Common Operating Systems and Their Differences Network Operating System UNIX / Linux / MS Windows2000 Server Desktop Operating System MS Windows 9X/Me / Mac OS / DOS Mobile Operating System Palm OS and Pocket PC Examples : Examples Common operating systems WINDOW used in IBM compatible microcomputers UNIX multi-user, multi-tasking OS used in minicomputers and microcomputers VAX/VMS used in DEC’s VAX series of minicomputers DOS interface : DOS interface GUI : GUI Different Types of Operating System : Different Types of Operating System Cross-Platform Issues : Cross-Platform Issues Cross-Platform developing software for, or running software, on more than one type of operating platform. Machine-independent Programming Languages JVM Makeup Languages HTML XML Advantages cost-effective saves time develop the program on different computers Disk Operating System (DOS) : Disk Operating System (DOS) a part of operating system to control disk operation 2 parts small system data keep track of key information of the disk data area where data file is stored SMALL SYSTEM AREA in DOS : SMALL SYSTEM AREA in DOS 3 parts boot/boot record i.e. a short program for loading DOS into computer’s memory file allocation table (FAT) i.e. record the status of each part of the disk and keep track of all data root directory i.e. record the filename, size of the file , date and time Good Operating System : Good Operating System efficient time spent to execute its programs should be short small in size memory occupied should be as small as possible reliable Type of Operating System : Type of Operating System Batch processing Real time processing Time sharing processing Batch processing : Batch processing Jobs, together with input data, are fed into the system in a batch. The jobs are then run one after another. No job can be started until previous job is completed Real time processing : Real time processing immediate response is needed. For example anti-missile defense system airplane landing control system interrupt error in computer system Time sharing processing : Time sharing processing Each user is given a time slice to interact with the CPU. The size of the time slice will depend on the system. Each user is served in sequence. Special Features of OS : Special Features of OS multi-tasking multi-programming parallel processing buffering spooling Multi-tasking : Multi-tasking to handle 2 or more programs at the same time from a single user ‘s perception CPU can only perform one task at a time, however, it runs so fast that 2 or more jobs seem to execute at the same time Multi-programming : Multi-programming 2 or more programs store in the main memory at the same time when one job reeds to wait (e.g. I/O operation), CPU switch to another job to execute when the first job finishes waiting, CPU will get back the first job to execute Parallel Processing : Parallel Processing use 2 or more CPUs to handle jobs computer networking Job 1 Job 2 Job 3 Job 4 Job 1 Job 2 Job 3 Job 4 CPU 1 CPU 2 CPU 1 time time without multiprocessing with multiprocessing Buffering : Buffering a temporary storage area (buffers) to read data from input device or send data to the output device keep CPU busy because I/O operation is slow Spooling : Spooling a larger buffer from hard disk buffer store the data through I/O operation because I/O operation is slow and CPU operation is fast Slide 31: Thank You