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Lectur Introduction to information systems: Supporting and transforming business – Chapter TG_2_Handout

Technology guide 2 software. This chapter presents the following content: Discuss the major software issues that confront modern organizations, describe the general functions of the operating system, iIdentify the major types of application software. | 16-12-09 TECHNOLOGY GUIDE 2: Software INFORMATION SYSTEMS Supporting and Transforming Business Fourth Canadian Edition RAINER • PRINCE • SPLETTSTOESSER • SÁNCHEZ-RODRÍGUEZ 1 TECHNOLOGY GUIDE 2: SOFTWARE TG2.1 Software Issues TG2.2 Systems Software TG2.3 Application Software 2 LEARNING OBJECTIVES 1.  Discuss the major software issues that confront modern organizations. 2.  Describe the general functions of the operating system. 3.  Identify the major types of application software. 3 1 16-12-09 FIGURE TG 2.1 TYPES OF SOFTWARE 4 INTRODUCTION TO SOFTWARE •  Software: a set of computer programs that enable the hardware to process data •  Computer program: the sequence of instructions for the computer, which comprise software •  Documentation: written description of the functions of a software program •  Systems software: a set of instructions that serves primarily as an intermediary between computer hardware and application programs •  Application software: a set of computer instructions that provide more specific functionality to a user 5 TG 2.1 SOFTWARE ISSUES •  Software Defects •  Software licencing: see topics from The Software Alliance: ww2.bsa.org/country.aspx?sc_lang=en-CA •  Open Systems •  Open-source Software 6 2 16-12-09 OPEN-SOURCE SOFTWARE •  Advantages •  •  •  •  High quality Reliability Low Cost Flexibility •  Disadvantages •  Cost of maintenance •  Ease of use •  Training costs •  Compatibility issues 7 TG 2.2 SYSTEMS SOFTWARE •  Operating system: supervises the overall operation of the computer by monitoring the computer’s status, scheduling operations, and managing input and output processes. •  Functions performed by systems software: •  Control and support information processing activities •  Control and support peripherals (e.g. printers, keyboard, mouse) •  Enables self-regulatory functions of the computer •  Provides commonly used sets of instructions for all applications •  Supports application software by directing .