2 operating systems and utility softwares
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This document discusses operating systems and utility software. It defines system software as the interface between users and hardware. There are two types: operating systems and utility software. The operating system manages programs, memory, tasks, devices, networks and performance. Utility programs are included in the basic OS or as standalone programs. The document also outlines different types of operating systems including standalone, network, embedded, device-dependent, and device-independent operating systems.
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3 definition of operating systems
The document defines operating systems and describes their basic components and functions. It discusses how operating systems provide an interface between hardware and software, manage system resources, and allow for the execution of user programs. The goals of an operating system are to provide convenience for users and efficient operation of the computer system. An operating system is a type of system software that coordinates hardware and software and controls and allocates resources.
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An operating system is a program that manages hardware and software resources on a computer. It controls memory allocation, processes input/output, manages files and storage, and controls peripheral devices like printers. Operating systems can be found on many devices like phones, game consoles, desktop computers, and run programs by scheduling processes or threads. Their main function is to allow other programs to run by allocating resources and coordinating hardware and software interactions.
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This document provides an introduction to operating systems. It defines an operating system as a program that acts as an intermediary between the user and computer hardware. The key components of a computer system are described as hardware, operating system, application programs, and users. Operating systems manage resources, control programs, and provide common services like memory management, process management, and I/O management. Various computing environments are explored, including traditional systems, mobile systems, distributed systems, client-server models, and virtualization.
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The document defines operating systems and describes their basic components and functions. It discusses how operating systems provide an interface between hardware and software, manage system resources, and allow for the execution of user programs. The goals of an operating system are to provide convenience for users and efficient operation of the computer system. An operating system is a type of system software that coordinates hardware and software and controls and allocates resources.
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The operating system manages the hardware and software on a computer. It performs several main functions including processor management, memory management, device management, storage management, and providing a user interface. Specifically, it controls what tasks the processor performs, manages the computer's memory and storage space, installs and updates device drivers, and allows users to interact with the system through command-line or graphical interfaces.
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The document discusses operating systems, providing an introduction, history, definition, types, features, functions, advantages, and disadvantages. It explains that an operating system manages computer resources and enables interaction between hardware, software, and users. Early systems were batch processing oriented but now support multi-tasking, parallel processing, and time-sharing between users. Operating systems provide services like memory management, processor scheduling, and I/O control while hiding low-level details from users and applications.
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Bca i-fundamental of computer-u-3-functions operating systems
The document discusses operating systems and their functions. It defines an operating system as software that manages computer hardware resources and provides interfaces. The key functions of an operating system include managing the CPU, RAM and hardware; providing security; and providing interfaces for users and application software. Common operating system types include batch processing, real-time processing, time-sharing, and examples of Windows, Linux/Unix, and mobile operating systems.
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MS-DOS was first released in 1981 and updated until 1994 when it was replaced by Windows 95. All versions of Windows still contain some elements of DOS.
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Utility software helps maintain, manage, and protect computer resources. It includes programs like disk utilities, backup utilities, security software, and diagnostic tools. Disk utilities maintain files on disks, backup utilities safeguard files by creating copies, security software searches for and removes viruses, and diagnostic tools monitor system performance. Other utility software includes file management and transfer tools, CD/DVD burners, synchronization programs, and desktop customization options that make computing easier.
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The document discusses six main types of operating systems: single-user systems, which support either a single task or multi-tasking for one user; multi-user systems that allow multiple users to access a system simultaneously; multi-tasking systems that can run multiple programs concurrently by rapidly switching between them; multi-processing systems that use more than one CPU to enable several programs to run in parallel; embedded systems designed for devices like PDAs, cameras and cars with limited resources; and real-time systems intended for applications that require fast and predictable responses to inputs like industrial machinery.
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This document discusses different types of computer systems including batch processing systems, single-user systems, multi-user systems, single-tasking systems, multi-tasking systems, multiprogramming systems, and distributed systems. It provides examples of batch processing systems for payroll and utility billing. It also describes how batch processing, single-user systems, multi-user systems, multi-tasking, and multiprogramming systems work with no direct user interaction and by allocating short time slices to different programs or users.
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The document discusses operating systems and real-time operating systems. It defines an operating system as software that manages computer hardware resources and provides common services for programs. It then describes the main functions of an operating system including managing resources and devices, running applications, and providing a user interface. The document also discusses different types of operating systems including single-user/single-tasking, single-user/multi-tasking, and multi-user/multi-tasking. It defines a real-time operating system as one intended for real-time applications that has advanced scheduling algorithms to ensure deterministic timing behavior.
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Introduction to computing, Analog Computers, Hybrid computers, TYPES OF COMPUTER, Parts of the Computer ,
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Introduction to computing Chapter 1(B) by asad saleem
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At the end of the lesson, you should be able to;
define system, computer, and computer system
Identify the components of the computer system
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2 operating systems and utility softwares
- 1. Operating Systems and utility softwares Lecture 3 Zikria Mian
- 2. • What is system software • Types of system software • Operating system functions • What are utility programs and their types • Types of operating systems • Creating and managing folders on Z drive
- 3. System software • An interface between the user and the hardware. • Two types – Operating system – Utility softwares • Included with operating system • Stand alone
- 4. Operating System functions • Start computer – Cold boot and a cold boot is pressing the power switch when it is turned off. – Warm boot Warm boot is pressing the restart button while the computer is on • Managing programs – Single user / single tasking – Single user / multi tasking – Multi user / multi tasking – Multiprocessing • Managing memory – RAM – Hard disk – Paging and thrashing
- 5. Operating System functions (continued) • Coordinating tasks – FCFS First come, first served (FCFS) is an operating system process scheduling algorithm and a network routing management ... – FIFO/LIFO – High / Low Priority tasks • Configuring devices – Device driver – Plug and play – Automatic update • Monitoring performance • Files and data management • Network administration and security
- 6. Utility Programs • Usually included in basic OS – File Manager – Image viewer – Disk defragmenter etc • Stand alone – Partition magic – Antivirus programs – File compression / conversion – Web filters
- 7. Types of Operating Systems • Stand alone – Windows – Macintosh – Linux • Network – Windows server 2008 – Solaris – Netware • Embedded – Windows Mobile – Google Android – Blackberry
- 8. Types of OS (continued) • Device-dependent • Device-independent Google Android
- 9. Summary • System software • Operating system functions – Managing programs, memory, tasks, devices, networks, performance etc. • Utility programs • Types of Operating systems
- 10. Summary • System software • Operating system functions – Managing programs, memory, tasks, devices, networks, performance etc. • Utility programs • Types of Operating systems