1. Module 2 Part I Introduction To Windows Operating Systems Intro & History Introduction To Windows Operating Systems Intro & History

2. Module 2 Pt 1 Objectives At the end of the lesson, you should be able to : –describe the concept and functions of an operating system (OS) –describe the 3 categories of OS –differentiate among different versions of Microsoft Windows

3. What Is Operating Systems ? Serves as intermediary between hardware and applications software Handles technical details without user intervention A Collection of programs –Operating system –Systems software –Kernel –Utilities –Device drivers –Language translators

4. OS Functions Determines which applications should run in what order and how much time should be allowed for each application before giving another application a turn (in multitasking OS). It manages the sharing of internal memory among multiple applications

5. OS Functions It handles input and output process It sends messages to each application or interactive user about the status of operation and any errors It can offload the management of what are called batch jobs so that the initiating application is freed from this work (i.e. print spool) It can manage how to divide the program (in parallel processing)

6. Operating System Categories Three basic categories –Embedded OS Used in handheld computers, Stored within device in Read-Only Memory Windows CE, Palm OS –Network OS  Controls and coordinates linked computers Novell NetWare, Windows NT Server, UNIX –Stand-alone  Desktop/ Personal Computer Operating system Controls a single desktop or laptop computer Client operating system MS-DOS, Windows 2000, XP, Mac OS X, Linux

7. MS-DOS Uses a command-line interface –Screen provides prompts for user –User types commands Largely replaced by graphical user interfaces Not user-friendly

8. Microsoft Windows Most popular OS for microcomputers Designed for Intel processors Active Desktop –Graphical user interface to OS Windows XP, Windows 2003 Windows CE

9. Apple MacOS Runs on Macintosh computers Designed for PowerPC microprocessors OS X -> Latest version OS First commercially successful GUI –Has served as the model for Windows and other GUI products developed since then

10. UNIX Originally ran on mainframe and minicomputers Used for large servers on the Web Popular alternative to Windows Several versions available –Solaris 8 –Linux

11. History of Windows OS YearEvent 1983Microsoft Windows was announced November, 1983 and sells for $100.00. 1985Microsoft Windows 1.0 was released November, 1985. 1987Microsoft Windows 2.0 was released April, 1987. 1990Microsoft Windows 3.0 was released May, 1990. 1991Microsoft Windows 3.0 with multimedia was released October, 1991. 1992Microsoft Windows 3.1 was released April, 1992 and sells more than 1 Million copies within the first two months of its release. 1992Microsoft Windows for Workgroups 3.1 was released October, 1992. 1993Microsoft Windows NT 3.1 was released August, 1993. 1993The number of licensed users of Microsoft Windows now totals more then 25 Million. 1994Microsoft Windows for Workgroups 3.11 was released February, 1994. 1994Microsoft Windows NT 3.5 was released September, 1994.

12. History of Windows OS YearEvent 1995Microsoft Windows NT 3.51 was released June, 1995. 1995Microsoft Windows 95 was released August, 1995 and sells more than 1 Million copies within 4 days. 1996Microsoft Windows NT 4.0 was released August, 1996. 1996Microsoft Windows CE 1.0 was released November, 1996. 1997Microsoft Windows CE 2.0 was released November, 1997. 1998Microsoft Windows 98 was released June, 1998. 1998Microsoft Windows CE 2.1 was released July, 1998. 1999Microsoft Windows 98 SE (Second Edition) was released May, 1999. 1999Microsoft Windows CE 3.0 was released 1999. 2000Microsoft Windows 2000 was released February 2000. 2000Microsoft Windows ME (Millennium) released July 2000. 2001Microsoft Windows XP released October 25 th 2001

13. History of Windows OS YearEvent 2001Microsoft Windows XP released October 2001 Windows XP Professional Windows XP Home Edition Windows XP 64-bit Edition 2002Windows XP Media Center Edition 2002Windows XP Tablet PC Edition 2003Windows Server 2003 released.  Standard, Enterprise, Data Center and Web Edition

14. Windows Timeline

15. Windows Features Long file names (up to 255 characters) Plug and Play –Makes installing hardware components easier Object Linking and Embedding (OLE) –Allows user to embed or link one document to another

16. Windows Family Windows 9x –Windows 95 –Windows 98 –Windows Millennium Edition (ME) Corporate Market –Windows NT (“New technology”) –Windows 2000 –Windows 2003 Windows XP Windows CE