Operating Systems Laurie Ganz Klye Leahy Tommy Mendoza Heather Shriner Katie Wagner

Operating System “ an interface between your computer and the outside world. ” organize and control hardware and software so that the device it lives in behaves in a flexible but predictable way.

Operating System Functions Translation Monitoring the computers overall performance Provides functions

The Evolution of Operating Systems No Operating Systems Monitors Simple Batch Systems Multiprogrammed Batch Systems Time Sharing Systems

When Operating Systems didn’t Exist technological capabilities Individual Programs One person used the computer at a time “Job Scheduling” Libraries 1 st procedure

Monitors RAM device drivers jumping back to the monitor.

Simple Batch Systems Punched Cards Input process Operating system process Output Process

Job Control Language JCL was used? Identified as JCL or data. What program needs to be run or what data file will be used.

Multi -Programmed Batch Systems Several programs Switch from one user environment to another. Relied on hardware

Time Sharing Multiprogramming Time Shared Multiple users A new control language

UNIX…………1960’s. Widely Accepted and available specifications Assurance that products meet agreed specifications Three parts to its operating system Kernel Shell Other Programs

What businesses consider Cost Available Applications Ease-of-use Reliability

Department of Child Support Services County of San Diego – Operating System: Windows XP Professional – Factors COST Reliability

Cox Communications Large cable, phone, internet, etc. company – Operating system: Windows XP – Plan to upgrade to Windows 7 once it is proved to be a reliable Operating System – Factors: Store extremely large amounts of information Ease of use for employees Cost

Passage Productions Film, video, and broadcast production company – Uses a combination of Mac OS and Windows OS Offer different applications needed to run their business Mac uses 64-bit platform, as does many of their platforms Use Adobe – cross-compatible Find Mac to be easier to use

CSUSM California State University – Operating System: Windows Vista – Factors: Cost Ease-of-Use Reliability – CSUSM stresses the importance of up-to-date technology

Porter’s Five Forces

Trends in OS Historical trends User’s Needs Competition (Macintosh vs. Windows) rqs rqs

Historical Trends -Manufacturing companies - Multiprogramming -1970’s Unix - Universities/Research Labs -Microprocessors -Graphical User interface

User Needs Language Types of Users needs: -Programmer, business, personal, hacker. – Visual aids – Virus Protection – Malfunctions

Macintosh & Windows Personal vs. Business -Market share Visual appeal Popularity Function/ Ease of use

What does the Future hold? -New improvements -New Age in OS IbI