lesson 6b
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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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UNIX
  • Oldest operating system, developed by Bell Labs in the 1970s
  • Still used today in insurance, medicine, banking, manufacturing and Web servers
ms dos
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
macintosh
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.
windows 3 x
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
os 2 warp
OS/2 Warp
  • Graphical user interface developed in 1982 jointly by IBM and Microsoft for Intel microprocessors
  • Now obsolete
windows nt
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
windows 9x
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
linux
LINUX
  • Released in late 1990s
  • New version of UNIX
  • Distributed for free
windows 2000
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
windows xp
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.
windows net
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
embedded operating systems
Embedded Operating Systems
  • Built into an electronic device’s circuitry
  • Found in devices such as PDAs
lesson 6b15
Lesson 6B
  • PC Operating Systems
review questions
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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