PPT-Chapter 3 Operating Systems Concepts 1 A Computer Model An operating system has to deal

Chapter 3 Operating Systems Concepts 1 A Computer Model An operating system has to deal with the fact that a computer is made up of a CPU random access memory RAM inputoutput IO devices and longterm storage. . C. ontents. What is an Operating System. ?. Operating System Objectives. Services Provided by the Operating System. . Functions of an Operating System on a Network. Types of Operating Systems. Simple Batch Systems. Dr. Atif Azad. Atif.azad@ul.ie. 1. Example: What’s in a Search Query?. Complex interaction of multiple components in multiple administrative . domains. Systems, services, protocols, …. Datacenter. A computer is a machine that is used to store and process data electronically. Computer Definition. Hardware. Pieces . of equipment that make up a computer system. . These . are the parts you can touch (although many parts are contained within the computer’s case). . Lesson 1. Remember. Hardware = the physical components of a computer system; anything that can be seen or touched, e.g. monitor, hard disk, keyboard. Software = the programmes that run on the hardware, e.g. the operating system, Word, Scandisk. Hardware vs. Software. Hardware. Physical components. Input/Output. devices. Internal components. Software. The . programs or instructions that tell the computer what to do . Operating systems. Applications. J. Holvikivi 2013. Software Categories. System. Software. Application. Software. The Operating System. Operating. System. GUI. Operating Systems. 2.. 4. Algorithms – basis of software. A sequence of steps that directs the execution of a task. Systems and . Utility Programs. OBJECTIVES. After completing this lesson, you should be able to:. Describe the two types of system software. Describe the . functions of an Operating System.. Understand the startup process on a personal computer.. 1. A Computer Model. An operating system has to deal with the fact that a computer is made up of a CPU, random access memory (RAM), input/output (I/O) devices, and long-term storage. . 2. Disk Drive. <number>. A Computer Model. An operating system has to deal with the fact that a computer is made up of a CPU, random access memory (RAM), input/output (I/O) devices, and long-term storage. . <number>. ). Adapted from “Cooling Systems” – CTAE Information Technology Essentials http://www.gactaern.org/curriculum_compnet_itessentials.html. PROFITT Curriculum . Basic. Computer Skills Module 1. Hardware Concepts. of computer science and the art of . programming. Unit 0. Module 4. © David J. Malan, Doug Lloyd. hardware. binary number system. Motherboard. The main circuit. board –. . it connects all the. other parts . By: Lecturer . Raoof. . Talal. 1.1 What are the Operating Systems. ?. An . operating system . is a program that manages the computer hardware. It also acts as an intermediary between the computer user and the computer hardware. ) . ,. and it is operating under the control of instructions (software).. Computer Definition. • Hardware: . - Pieces of equipment that make up a computer system. . - These are the parts you can touch (although many parts are contained within the computer’s case). . Describe . why computers are important. . . Explain how computers work. . Explain the difference between computer hardware and computer software. . Describe what an operating system is.. Learning Goals.