PPT-CS 140 Lecture Notes: Technology and Operating Systems

Slide 1 Technology Changes Mid1980s 2012 Change CPU speed 15 MHz 25 GHz 167x Memory size 8 MB 4 GB 500x Disk capacity 30 MB 500 GB 16667x Disk transfer rate 2 MBs 100 MBs. Slide . 1. Too Much Milk. . Person A. 3:00. Arrive home: no milk. 3:05. Leave for store. 3:10. Arrive at store. 3:15. Leave store. 3:20. Arrive home, put milk away. CS 140 Lecture Notes: Concurrency. Slide . 1. Too Much Milk With Locks. Both threads:. struct. lock l;. .... l. ock_acquire. (&l);. if (milk == 0) . {. . . buyMilk. ();. }. lock_release. (&. l);. CS 140 Lecture Notes: Locks. Slide . 1. Uniprocessor . Locks. void . lock_acquire. (. struct. lock *l) {. . intr_disable. ();. if (!l->locked) {. l->locked = 1;. } else {. . queue_add. (&l->q, . †€€€ŒŒŒŒ \r\f\t \r\f\f \r\f\r\r ŸŒ\n’Ÿ\rŒŸ\r•˜—\b\rŒ\n\b›Œ™’\n\nŸŒ\b\n™\rŸŽ\n…Œ™\rŒ‘&# Day Monday Notes: Tuesday Notes: Wednesday Notes: Thursday Notes: Friday Notes: Saturday Notes: Sunday Notes: Workout Intervals Steady row Repeat four times for one set then take a break of 3 minu Slide . 1. <. p>Sample . <b>bold</b> display</p>. P. B. #text. #text. nextSibling. prevSibling. nextSibling. prevSibling. firstChild. lastChild. parentNode. parentNode. parentNode. Slide . 1. Memory Layout for Process. Code. 0. ∞. Data. Stack. CS 140 Lecture Notes: Linkers. Slide . 2. Creating a Process. Code. 0. ∞. Data. Stack. 101010101010101010101010101010101010101010101010. 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. Chapter Contents. Section A: Operating System Basics. Section B: Today’s Operating Systems. Section C: File Basics. Section D: File Management. Section E: Backup Security. Chapter 4: Operating Systems and File Management. Chapter Contents. Section A: Operating System Basics. Section B: Today’s Operating Systems. Section C: File Basics. Section D: File Management. Section E: Backup Security. Chapter 4: Operating Systems and File Management. 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. kindly visit us at www.examsdump.com. Prepare your certification exams with real time Certification Questions & Answers verified by experienced professionals! We make your certification journey easier as we provide you learning materials to help you to pass your exams from the first try. Professionally researched by Certified Trainers,our preparation materials contribute to industryshighest-99.6% pass rate among our customers. ‹#›. ICS 143A - Principles of . Operating Systems . (Spring 20. 20. ). Lecture 1 - Introduction and Overview. MWF 11. :00- . 11:50. . a. .m.. Prof. Nalini Venkatasubramanian. ( . nalini@uci.edu.