Operating SystemsOperating Systems

Or why is Bill Gates so rich?ComputersMr. Specter

Steel Valley High School

Or why is Bill Gates so rich?ComputersMr. Specter

Steel Valley High School

You Already Know Several OS’s

You Already Know Several OS’s

• Windows• Mac• Xbox• Playstation• Your Cell Phone

• Windows• Mac• Xbox• Playstation• Your Cell Phone

What Exactly is an Operating System?What Exactly is an Operating System?

• A collection of programs that make computers or computer-based devices work.

• Elements include how files and programs are organized and stored, How memory is accessed and used etc.

• A collection of programs that make computers or computer-based devices work.

• Elements include how files and programs are organized and stored, How memory is accessed and used etc.

Why should we learn about them?

Why should we learn about them?

• When you buy a computer you may have options.• This will help you make an informed choice.

• It may help you solve computer problems.• It can help you make decisions when

upgrades are offered.• The operating system determines what

programs will work on your computer.

• When you buy a computer you may have options.• This will help you make an informed choice.

• It may help you solve computer problems.• It can help you make decisions when

upgrades are offered.• The operating system determines what

programs will work on your computer.

There are many different operating

systems.

There are many different operating

systems.• A recent check showed about 100 in

common use.• Many are ones you are likely to be

familiar with.• Some only work on specific brands of

hardware.• Some are no longer available, but are

still used by people who already own them.

• A recent check showed about 100 in common use.

• Many are ones you are likely to be familiar with.

• Some only work on specific brands of hardware.

• Some are no longer available, but are still used by people who already own them.

Different Operating Systems

Different Operating Systems

• Software has to be written to run on specific operating systems.

• For example, a program that was written for the Macintosh will not work on Linux or Windows.• Playstation software won’t run on XBOX

• A possible exception might be programs written in JAVA.

• Software has to be written to run on specific operating systems.

• For example, a program that was written for the Macintosh will not work on Linux or Windows.• Playstation software won’t run on XBOX

• A possible exception might be programs written in JAVA.

WindowsWindows

• There are many current flavors of Windows• Even with Vista there were several varieties:

• Windows Vista Basic• Windows Vista Home• Windows Vista Business• Windows Vista Ultimate

• Vista has been replaced by System 7• Windows Server• Windows Mobile

• There are many current flavors of Windows• Even with Vista there were several varieties:

• Windows Vista Basic• Windows Vista Home• Windows Vista Business• Windows Vista Ultimate

• Vista has been replaced by System 7• Windows Server• Windows Mobile

WindowsWindows

• That’s not even considering old versions of Windows• Windows XP• Windows 2000• Windows ME• Windows 98• Windows 95• Windows for Workgroups• NT, Professional and server versions

• That’s not even considering old versions of Windows• Windows XP• Windows 2000• Windows ME• Windows 98• Windows 95• Windows for Workgroups• NT, Professional and server versions

Server VersionsServer Versions

• Server versions are used to store data, supply services and control user accounts on networks.

• Windows, Linux, and Macintosh all have server versions.

• Some used to work with computers running their own operating systems. Now most work with nearly all of them.

• Server versions are used to store data, supply services and control user accounts on networks.

• Windows, Linux, and Macintosh all have server versions.

• Some used to work with computers running their own operating systems. Now most work with nearly all of them.

WindowsWindows

• Not every OS succeeds• Bill Gates sold his because another OS

manufacturer didn’t understand the market

• Even Microsoft has had it’s failures• Windows ME• Many would argue Vista• Bob

• Not every OS succeeds• Bill Gates sold his because another OS

manufacturer didn’t understand the market

• Even Microsoft has had it’s failures• Windows ME• Many would argue Vista• Bob

Microsoft BobMicrosoft Bob

• Bob was developed in the late 80’s to early 90’s because there was a concern that computers were too complex for most home users.

• Bob was developed in the late 80’s to early 90’s because there was a concern that computers were too complex for most home users.

Microsoft BobMicrosoft Bob

• Bob featured a log-in screen that allowed individual settings for each family member.

• The dog acted as a built-in help to guide users through the operating system.

• Bob featured a log-in screen that allowed individual settings for each family member.

• The dog acted as a built-in help to guide users through the operating system.

Microsoft BobMicrosoft Bob

• The actual interface was the interior of a home. • The user moved from room to room and clicked

on items to load programs.• Bob was a huge failure.• The person who headed development on Bob

didn’t fair too badly. • It was a woman named Melinda Ann French. • She later married and is now known as Melinda

Gates.

• The actual interface was the interior of a home. • The user moved from room to room and clicked

on items to load programs.• Bob was a huge failure.• The person who headed development on Bob

didn’t fair too badly. • It was a woman named Melinda Ann French. • She later married and is now known as Melinda

Gates.

Other Operating Systems

Other Operating Systems

• Apple Macintosh OS• Developed by Apple• Comes in both workstation and server

versions• Designed to run only on Apple hardware• There were many different versions through

the years• Identified by numbers – OS 10.4 etc.

• Apple Macintosh OS• Developed by Apple• Comes in both workstation and server

versions• Designed to run only on Apple hardware• There were many different versions through

the years• Identified by numbers – OS 10.4 etc.

DOSDOS

• DOS (Disk Operating System) were early operating systems.

• They didn’t require many resources to work.

• Microsoft had their own as did Apple and Many other manufacturers.

• The interface (What the user saw) was a Command Line Interface requiring the entry of cryptic commands to launch programs and make the computer work.

• DOS (Disk Operating System) were early operating systems.

• They didn’t require many resources to work.

• Microsoft had their own as did Apple and Many other manufacturers.

• The interface (What the user saw) was a Command Line Interface requiring the entry of cryptic commands to launch programs and make the computer work.

UnixUnix

• Runs on mainframes and PC’s. • Works on a variety of hardware.• There are many variations.• User interface is strictly command

line.

• Runs on mainframes and PC’s. • Works on a variety of hardware.• There are many variations.• User interface is strictly command

line.

LinuxLinux

• Developed as an alternative to Windows by volunteers.

• Runs on several hardware platforms.• Is called “Open Source”.• Is distributed mostly for free.• OS includes “Open Office” Applications.• User usually only pays for support.

• Developed as an alternative to Windows by volunteers.

• Runs on several hardware platforms.• Is called “Open Source”.• Is distributed mostly for free.• OS includes “Open Office” Applications.• User usually only pays for support.

LinuxLinux

• Will not run Windows programs.• Does not support all hardware.• There are many varieties.• Server versions are often used because very

few viruses have been written to attack Linux computers.

• Linux has been adapted to many devices including HDTV’s, Cable Boxes and Cell phones.

• Will not run Windows programs.• Does not support all hardware.• There are many varieties.• Server versions are often used because very

few viruses have been written to attack Linux computers.

• Linux has been adapted to many devices including HDTV’s, Cable Boxes and Cell phones.

Some Other OS’sSome Other OS’s

• Amiga• Developed as a gaming computer in the 90’s. • It was more advanced than both Apple and

Windows at the time and very popular.• It was developed into a tool for video production

using an expansion called the “Video Toaster.”• The company went broke when they developed

a gaming console that was a commercial failure.

• Amiga• Developed as a gaming computer in the 90’s. • It was more advanced than both Apple and

Windows at the time and very popular.• It was developed into a tool for video production

using an expansion called the “Video Toaster.”• The company went broke when they developed

a gaming console that was a commercial failure.

Other OS’sOther OS’s

• Sun Microsystems• Newton• Palm• Next• Xbox• Itouch/IPhone

• Sun Microsystems• Newton• Palm• Next• Xbox• Itouch/IPhone

The AssignmentThe Assignment

• I want you to recommend the correct operating system for each situation.

• Everyone does their own work.• There may be more than one possible

correct answer. • Any one of them will get you credit.

• You may use your notes and the Internet for help.

• I want you to recommend the correct operating system for each situation.

• Everyone does their own work.• There may be more than one possible

correct answer. • Any one of them will get you credit.

• You may use your notes and the Internet for help.