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Introduction to Computers

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Lesson 6B. Introduction to Computers. UNIX. Oldest operating system, developed by Bell Labs in the 1970s Still used today in insurance, medicine, banking, manufacturing and Web servers. MS-DOS. Most popular PC operating system during the 1980s and early 1990s, now obsolete, not really.

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Introduction to Computers

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  1. Lesson 6B Introduction to Computers

  2. UNIX • Oldest operating system, developed by Bell Labs in the 1970s • Still used today in insurance, medicine, banking, manufacturing and Web servers

  3. MS-DOS • Most popular PC operating system during the 1980s and early 1990s, now obsolete, not really. • Command-line interface • One program at the time • One user and a single processor • Designed to recognize only 1 MB of RAM • Wide variety of program-specific interface • Was designed for 16-bit CPU • Hardware difficult to install • File names are limited to 8 characters • Command line interface to be difficult

  4. Macintosh • Offered first graphical user interface beginning in the mid-1980s • Still popular with publishers, multimedia developers, graphic artists and schools • At the beginning was ahead of Windows with many other features like built in network support and plug and play Hardware support. • The fact that Mac OS works only on Macintosh computers it is one of its drawbacks.

  5. Windows 3.X • Windows was Microsoft’s first graphical user interface, introduced in the mid-1980s • Operating environment, not operating system, that ran on top of DOS • Windows 3.0 introduced in 1990 was Microsoft’s first successful version of Windows • Windows 3.x refers to more than one member of the Windows 3 family, now considered obsolete

  6. OS/2 Warp • Graphical user interface developed in 1982 jointly by IBM and Microsoft for Intel microprocessors • Now obsolete

  7. Windows NT • Introduced in 1993 • Windows NT Workstation still used in architectural firms, audio and video production studios and graphics studios • Microsoft stopped supporting Windows NT in 2001

  8. Windows 9X • Released in 1995, Windows 95 was the first member of the Windows 9x family • Windows 98 considered to be an upgrade of Windows 95 • Released in 2000, Windows ME was the last member of the Windows 9x family, still widely used, but considered by experts to be obsolete

  9. LINUX • Released in late 1990s • New version of UNIX • Distributed for free

  10. Windows 2000 • Released in 2000 • Combined the features of Windows 98 and Windows NT • There are many types of windows 2000 which are: Professional, Server standard edition, Advanced server, Data Centre Server

  11. Windows XP • Released in 2001 • Available in two editions: home and professional • Has advanced features like: Digital Media Support, Advanced Networking and Communications, Advanced Mobile Computing.

  12. Windows .Net • Latest addition to the server-based Windows OS family includes the following: Application centre, BizTalk Server, Commerce Server, Exchange Server, Internet security and acceleration Server, Mobile Information Centre, Share-point Portal Server and SQL Server

  13. Embedded Operating Systems • Built into an electronic device’s circuitry • Found in devices such as PDAs

  14. Three most popular embedded operating systems: • Palm OS • Windows CE • Pocket PC OS

  15. Lesson 6B • PC Operating Systems

  16. Review Questions • What is the oldest operating system? • What was the most popular operating system in the 1980s? • Which operating system was the first graphical user interface? • When was Windows first introduced?

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