11/4/2001 Theodore Chrysafis - ENG102 - Academic Writing - City College

1

Operating Systems

A Brief Introduction.Part A'

11/4/2001 Theodore Chrysafis - ENG102 - Academic Writing - City College

2

Introduction

• First Software.

• Control Operations.

• Last Software.

11/4/2001 Theodore Chrysafis - ENG102 - Academic Writing - City College

3

The Backbone

• Microwave Oven vs Personal Computer.• Common Operating Systems

(MSWindows Family, Unix Family, Macintosh).

• What the Operating System (OS) does?– Manage Hardware - Software.– Manage applications deal with hardware.

11/4/2001 Theodore Chrysafis - ENG102 - Academic Writing - City College

4

The Backbone(continued)

• Four types of OS – Real Time OS (RTOS)– Single User - Single Task– Single User - Multitask– Multiuser

11/4/2001 Theodore Chrysafis - ENG102 - Academic Writing - City College

5

Starting the PC

• ROM

• POST (Power On Self Test)

• Bootstrap Loader

11/4/2001 Theodore Chrysafis - ENG102 - Academic Writing - City College

6

Operating System Tasks

• There are six common categories of OS tasks.– Processor Management– Memory Management– Storage Management– Device Management– Application Interface (API)– User Interface

11/4/2001 Theodore Chrysafis - ENG102 - Academic Writing - City College

7

The Future

• Functions a court might allow to be bundled into an OS.

• Creation of an OS usable from corporations and consumers.

11/4/2001 Theodore Chrysafis - ENG102 - Academic Writing - City College

8

Links• Reference

http://www.howstuffworks.com/operating-system.htm

• OS Projects and Related Research http://www.cs.arizona.edu/people/bridges/oses.html

• Os News, On-Line Magazinehttp:///www.osnews.com

• OS Web News, About OS http://www.osweb.net

• comp.os.research, FAQ http://www.best.com/~bos/os-faq