computer system (system analysis & design)
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This document discusses the components and characteristics of a computer system. It begins with identifying the author and topic, which is a course assignment on system analysis and design. It then outlines the main points to be covered, including understanding key terms of computer systems, a block diagram of a digital computer system, properties and characteristics of a system, types of systems, and elements of a system involving inputs and outputs. The document proceeds to define the main hardware and software components of a computer system. It provides a block diagram and describes the major characteristics of organization, interaction, interdependence, integration, and central objective. Finally, it outlines different types of systems and concludes by thanking the reader.
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The document discusses the basics of operating systems and computer systems. It defines an operating system as a program that manages a computer's hardware and acts as an intermediary between the user and computer. A computer system consists of hardware components like the CPU and memory, an operating system, application programs, and users. The operating system controls hardware usage and coordinates application programs for users. It describes functions of the operating system like memory management, device management, processor management, file management, and security.
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Components of computer, CPU computer funfament ppt
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References = computer fundamental book
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An Operating System or OS is the most important software and program that can run all types of Computer, Mobile phone, Hand Held Device, etc. It helps to connect and interface computer hardware to program and application software and other common essential services. The OS is initially loaded on at boot time. Like a host, the OS acts for running and handling of application programs and operation of the hardware on the machine. The working principle of OS is first to configure then check ability to perform and then allow the program to run. Its main purpose is to handle the activities based on computer hardware. The OS also provides management of input, output and storage devices. Mostly in a system, some different computer programs run at the same time and they need to access CPU, memory, and storage. In an operating system, the user can communicate with the Command Line Interface by typing some command, and the user receives the response back from the system. But Modern Time Operating system uses a graphical user interface or GUI for easy to use. Now user can communicate with a system using a mouse to click button, menus, and everything is displayed on the screen using Text, Graphics or image. It is like a bank manager-- it makes sure that the working of application software must not be interfered by any other activity. Sumanta Kabiraj | Anjli Gupta | Prof. Subhashis Kumar Chandra"Operating System a Case Study" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-3 , April 2018, URL: http://www.ijtsrd.com/papers/ijtsrd10780.pdf http://www.ijtsrd.com/computer-science/operating-system/10780/operating-system-a-case-study/sumanta-kabiraj
Os unit 1
An operating system manages computer hardware resources and provides an interface between users and applications. It controls hardware, allocates memory and storage space, manages files, handles input/output between hardware and applications, provides security, and interprets commands. The main goals of an operating system are to make the computer convenient for users and efficiently use hardware resources. Common operating systems include those for mainframes, personal computers, distributed systems, real-time systems, and more specialized operating systems. Operating systems perform essential functions like process management, memory management, file management, input/output management, secondary storage management, and more.
Introduction to computers MRS. SOWMYA JYOTHI
The document provides an introduction to computers including:
- A computer is defined as an electronic device that processes data under programmed instructions to produce information.
- The main components of a computer are the input, output, storage, and central processing units. The CPU contains the control unit, arithmetic logic unit, and memory unit.
- Computers can be classified based on their construction (analog, digital, hybrid), application (general purpose, special purpose), and size/speed (supercomputer, mainframe, mini computer, workstation, microcomputer).
- Software includes system software like operating systems and application software for specific tasks. Hardware refers to the physical and electronic components of a computer system.
Lecture on Computer Introduction
This lecture discusses computers, including:
1. Defining a computer and discussing its basic components of input, processing, output, and storage.
2. Classifying computers into three main types - analog, digital, and hybrid - based on how they process data.
3. Describing the basic hardware components of a computer system, including the monitor, keyboard, printer, mouse, and differentiating hardware from software.
Operating System
This document provides an introduction and overview of operating systems. It defines an operating system as a program that acts as an intermediary between the user and computer hardware to effectively utilize system resources and make problem solving easier. A computer system consists of hardware, operating system, application programs, and users. The operating system coordinates access to resources, executes programs, handles input/output, manages files and directories, and provides protection and security for multi-user systems. It discusses the evolution of operating systems and provides examples of early systems like batch processing and timesharing systems.
Operating System Seminar By Owonubi Job Sunday
Kogi State Polytecnnic (Group 1) Seminar On Operating System.
Supervised By Mrs. Audu Ikani Lucy And Compiled Together By Owonubi Job Sunday, Abdullahi Mutalib Ozovehe, Hasheer Mohammed And The Likes, Feel free to reply via jobowonubi@gmail.com..
Thanks
3330701_unit-1_operating-system-concepts.pdf
This document provides an overview of operating systems, including their evolution, types, components, and services. It discusses the need for operating systems to manage hardware resources and provide common services to applications. The major types of operating systems covered are batch, multiprogramming, time-sharing/multitasking, and real-time. It also describes the components of a computer system and how the operating system acts as a manager between hardware, applications, and users. The evolution of operating systems is traced from serial processing to modern personal computer systems.
A Survey On Operating System Challenges And Security Issues Associate To It
This document discusses operating system challenges and security issues. It begins with an introduction to operating systems and their role in managing computer hardware resources. It then describes four main types of operating systems: batch, time-sharing, distributed, and real-time. The document outlines the operating system's role in memory management and discusses some key security challenges like unauthorized access, Trojan horses, and program threats. It concludes by stating that optimizing operating system performance is important as hardware becomes more complex, and more research is needed to address challenges in developing secure and reliable operating systems.
AOM-Week 12-13-GROUP 6.pdf
System analysts study and analyze technological systems to identify problems and suggest solutions. System analysis evaluates computer systems to improve them by identifying errors, accessibility issues, and design incompatibilities. The process of system analysis involves identifying problems, collecting data, analyzing the data, designing solutions, and implementing those solutions. System analysis aids in understanding complex structures, achieving compatibility between subsystems, and comparing subsystem and system capabilities. Common tools and techniques for system analysis include grid charts, simulations, decision trees, system flow charts, and decision tables. The benefits of system analysis include saving money, improving productivity, and enabling better management.
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A Survey On Operating System Challenges And Security Issues Associate To It
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computer system (system analysis & design)
- 1. Md. Sabbir Ahmed Id no. 002 15 206 004 8th semester of CSE Dept. Topic: Computer System Course title: System Analysis & Design. Course code: CSE – 325 1 1 / 15
- 2. Content’s To Be Discussed … Keyword To Understand Of Computer System. Using Of A Block Diagram, Of Digital Computer System. Characteristics / Properties of a System. short notes on Properties of a System/ computer system. Types of system. 2 / 15
- 3. Computer System A computer system consists of some main stage as like, Hardware, software & somewhere User. Hardware part have been carefully chosen so that they will work together and software part run in the computer. For software part the main things OS (operating system, ex: windows XP, 7, 8, 8.1, 10 etc) A computers hardware components are the physical part of a computer, as like: Monitor, mouse, keyboard, printer, scanner, M/B (main board/ motherboard) Application software's or simply apps, are often called end-user programs because they enable the user to complete tasks, such as creating documents, spreadsheets, databases and publications, doing online research, sending email, designing graphics, running businesses, and even playing games. Examples-MS office , music player etc 3 / 15
- 4. Block Diagram, Of Digital Computer System 4 / 15 CPU (ALU & CU) Input Device Output Device Main Memory Keyboard, Mouse, Mic, etc. Monitor, Printer, Speaker, etc.
- 5. Major Characteristics / properties of a Computer System. 1. Organization (Order) 2. Interaction 3. Interdependence 4. Integration 5. Central Objective 5 / 15
- 6. 1. Organization (Order) Organization implies structure and order. It is the arrangement of components that helps to achieve predetermined objectives. For example: Hierarchical relationship starting with the president on top and leading down ward to the blue collar worker represent the organization structure 6 / 15
- 7. It is defined by the manner in which the components operate with each other. For example, in an organization, purchasing department must interact with production department and payroll with personal department. Example” In computer system: CPU I/O device 1. Interaction 7 / 15
- 8. Interdependence means how the components of a system depend on one another. For proper functioning, the components are coordinated and linked together according to a specified plan. The output of one subsystem is the required by other subsystem as input. 3. Interdependence 8 / 15 CPU USERMEMORY
- 9. Simply it means- Integration is concerned with how a system components are connected together. It means that the parts of the system work together within the system even if each part performs a unique function. 4. Integration 9 / 15
- 10. Simply it means- The objective of system must be central. It may be real or stated. It is not uncommon for an organization to state an objective and operate to achieve another. 5. Central Objective 10 / 15
- 11. Physical or Abstract Systems Open or Closed Systems Adaptive and Non Adaptive System Permanent or Temporary System Natural and Manufactured System Deterministic or Probabilistic System Social, Human-Machine, Machine System Man–Made Information Systems Types of system 11 / 15
- 12. Element Of A System: 12 outputs and Inputs The main aim of a system is to produce an output which is useful for its user. Inputs are the information that enters into the system for processing. Output is the outcome of processing.
- 13. THANK YOU 13 Keyword To Understand Of Computer System. Using Of A Block Diagram, Of Digital Computer System. Characteristics / Properties of a System. short notes on Properties of a System/ computer system. Types of system. REVIEW