chap04 - Software: Systems and Application Software Click...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Software: Systems and Application Software Click to edit Master subtitle style Chapter 4 Principles of Information Systems, Sixth Edition Principles and Learning Objectives • When selecting an operating system, you must consider the current and future needs for application software to meet the needs of the organization. In addition, your choice of a particular operating system must be consistent with your choice of hardware. – – Identify & describe the functions of the 2 basic kinds of software. Outline the role of the operating system & identify the features of several popular operating systems. Principles of Information Systems, Sixth Edition Principles and Learning Objectives • Do not develop proprietary application software unless doing so will meet a compelling business need that can provide a competitive advantage. – – Discuss how applications software can support personal, workgroup, and enterprise business objectives. Identify 3 basic approaches to developing applications software and discuss the pros and cons of each. Principles of Information Systems, Sixth Edition Principles and Learning Objectives • Choose a programming language whose functional characteristics are appropriate to the task at hand, taking into consideration the skills and experience of the programming staff. – Outline the evolution of programming languages. • The software industry continues to undergo constant change; users need to be aware of recent trends and issues to be effective in their business and personal life. – Differentiate among the five generations of programming languages. Principles of Information Systems, Sixth Edition An Overview of Software • • • • Computer program - sequences of instructions for the computer Documentation - describes program functions Systems software - coordinates the activities of hardware & programs Applications software - helps users solve particular problems Principles of Information Systems, Sixth Edition The Importance of Software in Business Principles of Information Systems, Sixth Edition Supporting Individual, Group, and Organizational Goals Principles of Information Systems, Sixth Edition Operating Systems Click to edit Master subtitle style Principles of Information Systems, Sixth Edition Operating Systems • • • • • • • Perform common hardware functions Provide a user interface Provide hardware independence Manage system memory Manage processing Control access to system resources Manage files Principles of Information Systems, Sixth Edition The Role of the Operating System Principles of Information Systems, Sixth Edition Common Hardware Functions Accept keyboard input Store data on disks Send data to output devices • • • Principles of Information Systems, Sixth Edition User Interface • • Command-based interfaces Graphical User Interfaces (GUIs) Principles of Information Systems, Sixth Edition Hardware Independence Principles of Information Systems, Sixth Edition Memory Management Principles of Information Systems, Sixth Edition Processing Tasks • • • Multitasking - more than one program can run at a time using a single processor Time-sharing - multiple users can simultaneously use the resources of a single processor Scalability - easy adaptation to more users or tasks Principles of Information Systems, Sixth Edition Access to System Resources Protection against unauthorized access Logins and passwords • • Principles of Information Systems, Sixth Edition Personal Computer Operating Systems Principles of Information Systems, Sixth Edition Personal Computer Operating Systems Workgroup Enterprise Consumer Personal Principles of Information Systems, Sixth Edition Workgroup Operating Systems • • • • • • Netware Windows NT Server 4.0 Windows 2000 Server Unix Red Hat Linux Mac OS X Server Principles of Information Systems, Sixth Edition Enterprise Operating Systems • • • • IBM’s OS/390 HP’s MPE/iX (Multiprogramming Executive with integrated POSIX) IBM’s z/OS Linux Principles of Information Systems, Sixth Edition Consumer Appliance Operating Systems • • • • • • Windows CE.NET Mobil Linux Windows XP Embedded Handheld PC Pocket PC Palm OS Principles of Information Systems, Sixth Edition Nokia 7650 Principles of Information Systems, Sixth Edition Utility Programs Principles of Information Systems, Sixth Edition Types and Functions of Applications Software Principles of Information Systems, Sixth Edition Sources of Software Principles of Information Principles of Information Systems, Sixth Edition Comparison of Proprietary and Off-the-Shelf Software Principles of Information Systems, Sixth Edition Personal Application Software Click to edit Master subtitle style Principles of Information Systems, Sixth Edition Personal and Application Software Principles of Information Systems, Sixth Edition Personal and Application Software Principles of Information Systems, Sixth Edition TurboTax Principles of Information Systems, Sixth Edition Quicken Principles of Information Systems, Sixth Edition Word Processing Principles of Information Systems, Sixth Edition Spreadsheet Analysis Principles of Information Systems, Sixth Edition Database Applications Principles of Information Systems, Sixth Edition Graphics Programs Principles of Information Systems, Sixth Edition On-Line Information Systems Principles of Information Systems, Sixth Edition Software Suite Principles of Information Systems, Sixth Edition Major Components of Leading Software Suites Principles of Information Systems, Sixth Edition Workgroup Application Software • • Groupware Collaborative computing software Principles of Information Systems, Sixth Edition Group Scheduling Principles of Information Systems, Sixth Edition Examples of Enterprise Application Software Principles of Information Systems, Sixth Edition Enterprise Application Software Principles of Information Systems, Sixth Edition Selected Enterprise Resource Vendors Principles of Information Systems, Sixth Edition Programming Languages • • Commands and statements combined according to a particular syntax Different languages have different characteristics Principles of Information Systems, Sixth Edition Programming Languages Principles of Information Systems, Sixth Edition First-Generation Languages Machine language ASCII (American Standard Code for Information Interchange) • • Principles of Information Systems, Sixth Edition Second-Generation Languages • • • Assembly languages Assemblers Symbolic language Principles of Information Systems, Sixth Edition Third-Generation Languages Principles of Information Systems, Sixth Edition Fourth-Generation Languages • • • 4GLs Programs tell the CPU the desired results, not how to get them Examples: SQL, SAS Principles of Information Systems, Sixth Edition Fifth-Generation Languages • • • 5GLs Uses a visual or graphical development interface to create source language Examples: Visual Basic, PC COBOL, and Visual C++ Principles of Information Systems, Sixth Edition Object-Oriented Programming Languages • • • • Objects - data and actions that can be performed on the data Encapsulation - group items into an object Polymorphism - one procedure can work with multiple objects Inheritance - an object in a particular class gets attributes of that class Principles of Information Systems, Sixth Edition Object-Oriented Programming Languages Principles of Information Systems, Sixth Edition Software Issues & Trends • • • • • • Software bugs Open source software Software licensing Software upgrades Global software support Antitrust issues for software Principles of Information Systems, Sixth Edition How to Deal with Software Bugs Principles of Information Systems, Sixth Edition Summary • • • • Software - consists of programs that control the workings of the computer hardware Operating system - set of computer programs that controls the computer hardware Application - software that applies the power of the computer to solve problems and perform specific tasks Programming languages - provide instructions to a computer to perform some processing activity Principles of Information Systems, Sixth Edition ...
View Full Document

This note was uploaded on 03/08/2011 for the course ECON 4702 taught by Professor Abj during the Spring '11 term at Alaska Pacific University.

Ask a homework question - tutors are online