tailieunhanh - Lecture Introduction to Computers: Chapter 12B - Peter Norton's

Chapter 12B - Building information systems. Programs are the building blocks of information systems. When they create software products, programmers follow a process or life cycle - that is similar to the life cycle for entire information systems. The systems development life cycle (SDLC) is detailed in. The similar software development life cycle is discussed in this chapter. | McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. Chapter 12B Building Information Systems Systems Development Life Cycle Organized way to build information systems Consists of five phases Entire usable life of the system 12B- SDLC 12B- Systems Development Life Cycle Phase 1: needs analysis Users identify a need Solves three main problems Define the problem Present possible solutions Determine the best solution Technology analysts talk with users Define the problem using a description tool A solution is presented to a manager 12B- Teaching tip Structured English is covered in chapter 13. The term used is pseudo code. Systems Development Life Cycle Phase 2: Systems design Solution is defined Data storage User interface Reports Several design tools Top down design Bottom up design CASE tools used to build prototypes Computer aided software engineering 12B- Systems Development Life Cycle Phase 3: Development Solution to the problem is built Programmers play a key role Solutions may be purchased Solutions may be built locally Technical writers create instructions Solution is repeatedly tested 12B- Teaching tip Companies understand the SDLC and attempt to work with clients to provide the program they need. Oracle for instance has several add-ons for its core DBMS lines. Oracle financials, for instance, allows companies to completely track and maintain it’s cash flow and costs. Systems Development Life Cycle Phase 4: Implementation Installation of hardware and software Users must convert to the solution Direct conversion Parallel conversion Phased conversion Pilot conversion Trainers and support personnel are critical 12B- Teaching tip Pilot programs are often referred to as beta testing. The beta testers work with the product to guarantee that it is ready for release. SDLC Conversion 12B- Systems Development Life Cycle Phase 5: Maintenance IT professionals continue to monitor Bugs are . | McGraw-Hill Technology Education Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. Chapter 12B Building Information Systems Systems Development Life Cycle Organized way to build information systems Consists of five phases Entire usable life of the system 12B- SDLC 12B- Systems Development Life Cycle Phase 1: needs analysis Users identify a need Solves three main problems Define the problem Present possible solutions Determine the best solution Technology analysts talk with users Define the problem using a description tool A solution is presented to a manager 12B- Teaching tip Structured English is covered in chapter 13. The term used is pseudo code. Systems Development Life Cycle Phase 2: Systems design Solution is defined Data storage User interface Reports Several design tools Top down design Bottom up design CASE tools used to build prototypes Computer aided software engineering 12B- Systems Development Life Cycle Phase 3: Development Solution

• Hệ điều hành
• Introduction to Computers
• Computer systems
• Computer science
• Building information systems
• Information systems
• Management information system
• Discovering Computers
• A World of Computers
• The Components of a Computer
• Advantages of Using Computers
• Disadvantages of Using Computers
• Computers in society
• Computer defined
• Computers for organizations
• Introduction to java programming
• Introduction to Programs
• Introduction to Java
• TicTacToe Applet
• SelfTest Website
• Transforming data
• Number systems
• Computers represent data
• Java How to Program
• Assembly languages
• Hight level languages
• Introduction to object technology
• Typecal java development environtment
• Bài giảng Nhập môn tin học
• Nhập môn tin học
• Data processing
• Characteristic features of computers
• Computers evolution to their present form
• Computers generations
• Introduction to Computing
• Fundamental Concepts
• Computer History
• Analogue Computers
• First Digital Computers
• Today’s Computers
• Information processing cycle
• Computer hardware
• Software runs the machine
• Internet’s history
• World Wide Web
• Search techniques
• E mail addresses
• File Transfer Protocol
• Internet Relay Chat
• The keyboard
• Input device
• Mechanical mouse
• Inputting data
• Devices for the hand
• Optical input devices
• Audiovisual input devices
• Output device
• Video card
• Cathode Ray Tube
• Electronic magnetic fields
• Impact printers
• High quality printers
• Ink jet printers
• Modern CPUs
• Microcomputer processors
• Advanced micro devices
• Storage devices
• Categorizing storage devices
• Magnetic storage devices
• Improving drive perform ance
• Average access time
• Data transfer rate
• Operating system
• User interface
• Managing hardware
• Network operating systems
• PC operating systems
• Embedded operating systems
• Productivity software
• Acquiring software
• Word processing programs
• Graphics file formats
• Multimedia basics
• Graphics software
• Hybrid networks
• Sharing data
• Local Area Network
• Standard telephone lines
• Digital data connections
• Wireless networks
• Online world
• Internet through wires
• Internet wirelessly
• Consumer level
• Business level