Graphical User Interface – GUI

Microsoft Windows Family of OS :
Windows ver 3.1 1991 16bit OS, Runs over MS-DOS Multitasking
Icons, Menus, Dialog Boxes
Mouse – point, click, double click, drag, drop
Address memory beyond 640K
Windows ver3.11 1992 Peer to peer network = file/ Resource sharing,
for Workgroup supports MS Mail & Workgroup Scheduler
Virtual Memory – swap file
DOS is still required for booting the PC &
managing partition, Filing system.
Uses File Manager & Program Manager
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Microsoft Windows 95 Family of OS :
Windows 95 Aug1995 32-bit OS; takes over from DOS after starting
New costumizable user interface: Desktop; Start
Button, Task bar = more user friendly
Multi-tasking; Premptive Muti-threading
Recognizes & Connects to other NOS
like Netware, NT, Unix etc
Uses windows Explorer for disk/file management.
Windows 98 1998 Integrate web browsing features
Windows 98 OSR2 More stable then previous version
Can still run old DOS in command Window
Windows ME (Millenium Edition -2000) released before windows 2000 family
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Microsoft Windows NT (New Technology) Family of OS
Windows NT Workstation 3.1
Windows NT Advance Server 3.1
Windows NT Workstation 3.5
Windows NT Server 3.5
Windows NT 4, Workstation
Windows NT 4, Server
Windows NT 4 Server, Enterprise Edition



Microsoft Windows 2000 (NT 5.0) Family of OSThe Windows 2000 platform consists of the following four versions: