PPT-Operating Systems Computer Technology Notes #3

Development of Computers 1 st Generation computers 19401956 Used vacuum tubes Vacuum tubes are electronic devices that control the flow of electrons Had no operating systems the user programmed the computer by physically entering the computer and programming by hand. Principles and Practice. Tom Anderson. How This Course Fits in the UW CSE Curriculum. CSE 333: Systems Programming. Project experience in C/C++. How to use the operating system interface. CSE 451: Operating Systems. A program that controls . and . supports . the usage of computer . systems. Usage. Users . of a computer system. :. . programs. - use memory, use CPU time, use I/O . . devices. . human . users. Slide . 1. Technology Changes. Mid-1980’s. 2012. Change. CPU speed. 15 MHz. 2.5 GHz. 167x. Memory size. 8 MB. 4 GB. 500x. Disk capacity. 30 MB. 500 GB. 16667x. Disk transfer rate. 2 MB/s. 100 MB/s. 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. Real Time OS. Batch OS. Time Sharing OS. Why do we have different Operating Systems . Common types of Operating Systems . The Operating System . The OS is responsible for all the functions of hardware and also software. System Software. Learning Objectives. Explain system software and operating systems. Identify operating systems for desktop PCs. Identify operating systems for handheld PCs and larger . computers. Discuss . Dr . Damitha. . Karunaratna. . University of Colombo school of computing. Topics to discuss. What is an operating system(OS)?. Main objectives of an OS. Main functions of an OS. Evolution of OS.. Introduction. Content from. Operating Systems in Depth Thomas w. . Doeppner. ©2011. Operating Systems Principles & Practices by Anderson and . Dahlin. . 2014. Tannenbaum 2015. Stallings 2015. Chapter 3. System Software. In this Chapter. Identify System Software. Define Operating Systems . Describe Common OS Tasks . Manage Your Computer’s. Windows . Describe Common OS Features . Compare PC Operating Systems . Operating systems (OS) can help computer users do many things, like managing and manipulating files and folders.. Operating systems also provide users the ability to control hardware components of a computer and its peripheral devices, like printers and scanners.. 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), input/output (I/O) devices, and long-term storage. Spring 2016 Program Educational Objectives These are statements that describe the expected accomplishments of graduates during their first few years after graduation. The audiences for objective sta 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. Computer Systems & . Telematics. Freie Universität Berlin, Germany. TI III: Operating Systems & Computer Networks . Network. . Security. TI 3: Operating Systems and Computer Networks. Content.