Survery of Operating Systems 2nd Edition
... – An operating system that allows a single user to perform two or more functions at once is a Single‐ User/multitasking operating system – A Multi‐User/multitasking operating system is an operating system that allows multiple users to run programs simultaneously on a single network server, call ...
... – An operating system that allows a single user to perform two or more functions at once is a Single‐ User/multitasking operating system – A Multi‐User/multitasking operating system is an operating system that allows multiple users to run programs simultaneously on a single network server, call ...
Summary for chapter 2 OPERATING SYSTEM nAJWA kNEFATI
... The first GUI appeared on the Xerox Alto computer in 1973. The advent of Apple Macintosh computers in the 1980s. the Aqua interface that appeared with Mac OS X. Microsoft’s first version of Windows—Version 1.0—was based on the addition of a GUI interface to the MS-DOS OS. Cosmetic changes ...
... The first GUI appeared on the Xerox Alto computer in 1973. The advent of Apple Macintosh computers in the 1980s. the Aqua interface that appeared with Mac OS X. Microsoft’s first version of Windows—Version 1.0—was based on the addition of a GUI interface to the MS-DOS OS. Cosmetic changes ...
Computers Are Your Future Twelfth Edition
... • Cold boot - Starting computer when it has not yet been turned on • Warm boot - Restarting a computer that is already on o Restart Keys - Ctrl + Alt + Del ...
... • Cold boot - Starting computer when it has not yet been turned on • Warm boot - Restarting a computer that is already on o Restart Keys - Ctrl + Alt + Del ...
Chapter 6: Operating Systems: The Genie in the Computer
... Cache memory: Used when the speed of memory access is too slow - can’t keep up with the CPU’s needs (two types). 1. Disk cache - Saves the most frequently used parts of the program being run or executed in the RAM memory - Saving it from repeatedly retrieving it from the hard disk. 2. RAM disk - Foo ...
... Cache memory: Used when the speed of memory access is too slow - can’t keep up with the CPU’s needs (two types). 1. Disk cache - Saves the most frequently used parts of the program being run or executed in the RAM memory - Saving it from repeatedly retrieving it from the hard disk. 2. RAM disk - Foo ...
![Other mainframe operating systems[edit]](http://s1.studyres.com/store/data/001334245_1-8a4e59b5aa152bc4701a5ccb54665e40-300x300.png)
Other mainframe operating systems[edit]
... Several compeditors of Digital Equipment Corporation such as Data General, Hewlett-Packard, and Computer Automationcreated their own operating systems. One such, "MAX III", was developed for Modular Computer Systems Modcomp II and Modcomp III computers. It was characterised by its target market bei ...
... Several compeditors of Digital Equipment Corporation such as Data General, Hewlett-Packard, and Computer Automationcreated their own operating systems. One such, "MAX III", was developed for Modular Computer Systems Modcomp II and Modcomp III computers. It was characterised by its target market bei ...
Computers: Tools for an Information Age
... Each user is given a slice of time (fraction of a second) CPU works only on that user’s tasks during its time slice Response time: the time between typed request and computer’s reply Typically used in applications with many users CP102 Module 9: Operating Systems ...
... Each user is given a slice of time (fraction of a second) CPU works only on that user’s tasks during its time slice Response time: the time between typed request and computer’s reply Typically used in applications with many users CP102 Module 9: Operating Systems ...
Services - University of Worcester
... – e.g. hard disk is partitioned into drive C and drive D » data is on drive C » can safely it back up to drive D. ...
... – e.g. hard disk is partitioned into drive C and drive D » data is on drive C » can safely it back up to drive D. ...
ppt
... Week 13 – Protection and Security • Protection • Mechanisms in OS to keep processes from things they should ...
... Week 13 – Protection and Security • Protection • Mechanisms in OS to keep processes from things they should ...
Understanding Computers, 10/e, Chapter 6
... Will likely continue to support more synchronization between an individual’s various computing devices, such as a desktop PC, handheld PC, and smart phone. Understanding Computers ...
... Will likely continue to support more synchronization between an individual’s various computing devices, such as a desktop PC, handheld PC, and smart phone. Understanding Computers ...
Document
... ∗ memory mapping • interrupts – used by device for asynchronous notification (e.g., of request completion) – handled by interrupt handlers in the operating system ...
... ∗ memory mapping • interrupts – used by device for asynchronous notification (e.g., of request completion) – handled by interrupt handlers in the operating system ...
Operating Systems
... programming tools, text editors, typesetting tools, and graphical user interfaces based on the X windowing system. X is a standard in academic and scientific computing, but not hitherto common on PCs; it's a complex distributed windowing system on which people implement graphical interfaces like KDE ...
... programming tools, text editors, typesetting tools, and graphical user interfaces based on the X windowing system. X is a standard in academic and scientific computing, but not hitherto common on PCs; it's a complex distributed windowing system on which people implement graphical interfaces like KDE ...
FAT:
... limited the cluster count to 4078, but made FAT manipulation tricky with the PC's 8-bit and 16-bit registers. (Under Linux, FAT12 is limited to 4084 clusters.) The disk's size is stored as a 16-bit count of sectors, which limited the size to 32 MB. FAT12 was used by several manufacturers with differ ...
... limited the cluster count to 4078, but made FAT manipulation tricky with the PC's 8-bit and 16-bit registers. (Under Linux, FAT12 is limited to 4084 clusters.) The disk's size is stored as a 16-bit count of sectors, which limited the size to 32 MB. FAT12 was used by several manufacturers with differ ...
CS204 Operating Systems
... 1. To impart fundamental understanding of the purpose, structure, functions of operating system. 2. To impart the key design issues of an operating system Syllabus Basic concepts of Operating System, its structure, Process management, inter-process communication, process synchronization, CPU Schedul ...
... 1. To impart fundamental understanding of the purpose, structure, functions of operating system. 2. To impart the key design issues of an operating system Syllabus Basic concepts of Operating System, its structure, Process management, inter-process communication, process synchronization, CPU Schedul ...
course syllabus
... By the end of the semester, students in this course would have developed their own basic functions of an operating system through the completion of a series of laboratory assignment. The lectures will help to familiarize students with the main concepts of an operating system. Technical Requirements: ...
... By the end of the semester, students in this course would have developed their own basic functions of an operating system through the completion of a series of laboratory assignment. The lectures will help to familiarize students with the main concepts of an operating system. Technical Requirements: ...
Operating System
... – map: points to the map file used by LILO internally during bootup. – install: is one of the files used internally by LILO during the boot process. This holds both the primary and secondary parts of the boot loader. A segment of this boot.b file is written to the MBR (the primary part of the boot l ...
... – map: points to the map file used by LILO internally during bootup. – install: is one of the files used internally by LILO during the boot process. This holds both the primary and secondary parts of the boot loader. A segment of this boot.b file is written to the MBR (the primary part of the boot l ...
MINIX 3: status report and current research
... We believe we have made a good start toward producing a general-purpose, POSIXcompliant operating system with excellent fault tolerance. As hardware speeds have shot up over the past two or three decades, we do not believe that most users really care about squeezing the last drop of performance out ...
... We believe we have made a good start toward producing a general-purpose, POSIXcompliant operating system with excellent fault tolerance. As hardware speeds have shot up over the past two or three decades, we do not believe that most users really care about squeezing the last drop of performance out ...
Operating System
... system to create a major breakthrough in the operating system market. • Up this point, Windows was simply a management program that ran on top of DOS. Windows users still had to boot their machines to a DOS prompt before ...
... system to create a major breakthrough in the operating system market. • Up this point, Windows was simply a management program that ran on top of DOS. Windows users still had to boot their machines to a DOS prompt before ...
Operating Systems I
... A control program the manages all the resources of the computer on which it runs. ...
... A control program the manages all the resources of the computer on which it runs. ...
Computing Systems Division
... Jobs (user programs and data) now need to be on-line for user to be able to submit to system to run i.e. there must now be an on-line file system held on the disk. ...
... Jobs (user programs and data) now need to be on-line for user to be able to submit to system to run i.e. there must now be an on-line file system held on the disk. ...
ComputersandFiles
... computers and operating system and competes directly with Microsoft. Apple makes Macintosh computers, ibooks, G5 computers, etc… OS X will not run on a regular PC, it will work only on Apple made computers. Windows will not work on an Apple machine. ...
... computers and operating system and competes directly with Microsoft. Apple makes Macintosh computers, ibooks, G5 computers, etc… OS X will not run on a regular PC, it will work only on Apple made computers. Windows will not work on an Apple machine. ...
Input/Output (5.1
... • Each controller ha a few registers that are used for communicating with the CPU. The operating system can command the device by writing into these registers and learn the device’s state by reading from these registers. • Many devices have a data buffer that the operating system can read and write. ...
... • Each controller ha a few registers that are used for communicating with the CPU. The operating system can command the device by writing into these registers and learn the device’s state by reading from these registers. • Many devices have a data buffer that the operating system can read and write. ...
Netscape: System Commander in Patagonia
... host the System Oberon. Oberon is a programming language, a run-time- and operating system with an integrated development environment for object oriented or structured programming. The Oberon system is kept lean, simple and easily fits into a very small disk partition or main memory. All data is sto ...
... host the System Oberon. Oberon is a programming language, a run-time- and operating system with an integrated development environment for object oriented or structured programming. The Oberon system is kept lean, simple and easily fits into a very small disk partition or main memory. All data is sto ...
slides
... A cylinder is the collection of all the same tracks across all the multiple disk surfaces. There is a time associated with turning heads on and off so that a different surface can be accessed. We call this overhead the headswitching time. ...
... A cylinder is the collection of all the same tracks across all the multiple disk surfaces. There is a time associated with turning heads on and off so that a different surface can be accessed. We call this overhead the headswitching time. ...