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Introduction to Computers

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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