OPERATING SYSTEMS

Computer Maintenance

What is an OS?

The most important program that runs on a computer.

Manages all the other programs in a computer.

Manages all the hardware resources.

Most Popular Operating Systems

Windows: Most widely used. Mac OS: Only run on Macintosh

computers. Linux: Open-source

Windows 98

Released June 25, 1998

Windows 98SE – Released May 1999

Recommended Hardware Requirements: Processor: 486DX

66MHz or faster (Pentium)

RAM: 24MB Hard Drive: 500MB

New Features: Improved driver

support Improved PnP

support Internet Explorer 5 Customizable

Taskbar Active Desktop

Windows 2000

Released February 17, 2000

Four versions: Professional, Server, Advanced Server, & Datacenter Server

Recommended Hardware Requirements: Processor: 133MHz or

higher (Pentium) RAM: 64MB Hard Drive: 2GB

New Features: Support for many

devices Widows File

Protection Encrypting File

System Accessibility System File

Checker Recovery Console

Windows Me

Released September 14, 2000

Recommended Hardware Requirements: Processor: 300MHz

(150MHz) RAM: 64MB (32MB) Hard Drive: 2GB

(320MB)

New Features System Restore System File

Protection Windows Image

Acquisition Windows Movie

Maker Windows Media

Player 7

Windows XP

Released October 25, 2001

Two major versions: Home and Professional

Recommended Hardware Requirements: Processor: 300MHz RAM: 128MB Hard Drive: 1.5GB

New Features: Faster start-up Remote Desktop User Interface Windows Firewall Windows CD

burning Security Center Wireless

Connection

Windows Vista

Released January 30, 2007

5 Versions: Home Basic, Home Premium, Business, Enterprise, & Ultimate

Recommended Hardware Requirements: Processor: 1GHz RAM: 1GB Hard Drive: 40GB DVD-ROM

New Features: Windows Aero

Windows Flip Windows Flip 3D

Internet Explorer 7 Microsoft Defender Windows Search Windows Sidebar Improved security

and safety features

Windows 7

Released October 22, 2009

6 Editions: Starter Home Basic Home Premium* Professional* Enterprise Ultimate*

System Requirements: 1GHz processor, 1GB RAM for 32-bit 2GB for 64-bit, 20 GB disk space

Features

Snap Peek Shake Live Taskbar Previews HomeGroup Windows Search Jump Lists Libraries Desktop slide show

Snap

Peek

Live Taskbar Previews

Jump Lists

Libraries

Homegroups