TECHNOLOGY GUIDE TWO doc

TECHNOLOGY GUIDE
TWO
Computer Software
TECHNOLOGY GUIDE OUTLINE
TG2.1 Significance of Software
TG2.2 Systems Software
TG2.3 Application Software
TG2.4 Software Issues
TG2.5 Programming Languages
LEARNING OBJECTIVES

Differentiate between the two major types of
software.

Describe the general functions of the
operating system.

Describe the major types of application
software.
LEARNING OBJECTIVES (continued)

Describe the major software issues that
organizations face today.

Discuss the advantages and disadvantages
of open-source software.

Explain how software has evolved and
consider trends for the future.
TG2.1 Significance of Software


Computer program

Stored program concept

Documentation
Significance of Software (continued)
Types of Software

System software

Application software
TG2.2 Systems Software

System control programs

Operating system
Apple OS X Leopard
Functions of the Operating System

Multitasking/multiprogramming

Multithreading

Multiprocessing

Virtual Memory

Graphical user interface (GUI)

Social interface

Example of Social Interface Using an Avatar
Avatar
System Support Programs

System support programs

System utilities

System performance monitors

System security monitors
TG2.3 Application Software

Proprietary application software

Contract software

Off-the-shelf application software

Package
TG2.4 Software Issues

Software defects

Software evaluation and selection

Software licensing

Open systems


Open source software

Software-as-a-Service
TG2.5 Programming Languages

First-generation language or Machine
Language

Second-generation language or Assembly
language

Third-generation language or Procedural
language

Fourth-generation language or Non-
procedural language

Visual programming languages
Object-Oriented Languages

Object-Oriented Languages: Programming
language that encapsulate a small amount of
data with instructions about what to do with
data.

Methods

Object

Encapsulation


Reusability feature
Hypertext Markup Language and
Extensible Markup Language

Hypertext

Hyperlinks

Hypertext document

Hypertext markup language (HTML)

Extensible markup language (XML)
Comparison of HTML and XML