c4_computer_software.ppt
- 3. A software suite or application suite is a collection of computer programs —usually application software or programming software— of related functionality, often sharing a more-or-less common user interface and some ability to smoothly exchange data with each other. Groupware: software designed to facilitate collective working by a number of different users.
- 4. Trends in Computer Software First Generation Second Generation Third Generation Fourth Generation Fifth Generation User-Written Programs Machine Languages Packaged Programs Symbolic Languages Operating Systems High-Level Languages DBMS Fourth-Generation Languages Microcomputer Packages Natural & Object-Oriented Languages Multipurpose Graphic- Interface Network-Enabled Expert-Assisted Packages Trend: Toward Easy-to-Use Multipurpose Network-Enabled Application Packages for Productivity and Collaboration Trend: Toward Visual or Conversational Programming Languages and Tools
- 5. Common General- Purpose Applications Electronic Mail (is the exchange of computer-stored messages by telecommunication.) Word Processing (the production, storage, and manipulation of text on a computer or word processor.) Presentation Graphics (is a software package used to display information in the form of a slide show.) Multimedia (the use of a variety of artistic or communicative media.) Personal Information Manager (a computer program functioning as an address book, organizer, calendar, etc.) Groupware (software designed to facilitate collective working by a number of different users.)
- 6. Web Browsers Discussion Groups Surf the Net Launch Information Searches E-Mail Multimedia File Transfer Typical uses of a Web Browser in Internet, Intranet, and Extranet Environments
- 7. Database Management Packages Database Development Database Maintenance Database Interrogation Application Development Primary Tasks of Database Management Packages
- 8. Key Multimedia Technologies Videos Video Capture Card Storyboard Digital Video Interactive Video Editing System Authoring Language Sound Sound Board MIDI (Musical Instrument Digital Interface) Digital Audio Compressed Audio Delivery Compact Disk Interactive Web Platform (Flash)
- 9. Business Enterprise Application Software Customer Relationship Management Human Resource Management Accounting and Financial Management Supply Chain Management Enterprise Resource Planning Business Decision Support
- 10. Functions of an Operating System Resource Management Task Management User Interface File Management Utilities and Other Functions
- 11. Categories of Programming Languages Machine Languages Use binary coded instructions 1001 1001 1100 1101 High Level Languages Use brief statements Compute X = Y + Z Markup Languages Use embedded control codes Assembler Languages Use symbolic coded instructions LOD Y ADD Z Fourth Generation Languages Use natural statements Object-Oriented Languages Define objects that contain data and actions Document.write (“Hi There”) <H1>First heading</H> <!ELEMENT Product (#Item | manuf)> SUM THE FOLLOWING NUMBERS
- 12. Programming Language Translation Language Translation Process Source Program Machine Language Object Program Written in BASIC, COBOL, etc. Language Translator Program • Compiler • Interpreter • Assembler IF A := B THEN 1001101 1110101 0010110
- 13. Types of language translators Compilers: Language translator that converts an entire program into machine language before execute it. Interpreters: Translate one line of code at one time. Assemblers: Converts assembly language programs into machine language.
- 14. Chapter Summary Computer software consists of two major types of programs: application software that directs the performance of a particular end user task, and system software that controls and supports the operations of a computer system. Application software includes a variety of programs that can be segregated into general-purpose and application- specific categories. System software can be subdivided into system management programs and system development programs. The former is used to manage hardware, software, networks, and data resources. The latter is used by IS specialists to develop computer programs. An operating system is an integrated system of programs that supervises the operations of the CPU. There are 5 major levels of programming languages.
- 15. Chapter Objectives Describe several important trends occurring in computer software. Give examples of several major types of application and system software. Explain the purpose of several popular software packages for end user productivity and collaborative computing. Outline the functions of an operating system. Describe the main uses of high-level, fourth-generation, object-oriented, and Web-oriented programming languages and tools.