Chapter 2: Software & Operating System ATHENA

Chapter 2: Software & Operating SystemATHENAObjectiveWhat is the software? How is software categorized? What is an operating system ? What does an operating system do?ATHENAWhat’s the software ?Software is the instructions and associated data, stored in electronic format, that direct the computer to accomplish a task. A computer program is a set of detailed, step-by-step instructions that tells a computer how to solve a problem or carry out a task.ATHENAHow is software categorized?Software is categorized as either application software or system software. Application software is designed to be used for a purpose such as drawing designs, creating documents, etc. System...
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Chapter 2: Software & Operating System ATHENA Chapter 2: Software & Operating SystemATHENA Objective What is the software? How is software categorized? What is an operating system ? What does an operating system do?ATHENA What’s the software ? Software is the instructions and associated data, stored in electronic format, that direct the computer to accomplish a task. A computer program is a set of detailed, step-by-step instructions that tells a computer how to solve a problem or carry out a task.ATHENA How is software categorized? Software is categorized as either application software or system software. Application software is designed to be used for a purpose such as drawing designs, creating documents, etc. System software is designed to help the computer carry out the basic operating functions Ex: Operating systems, utilities, and driversATHENA Operating System Overview: What is an operating system ? An operating system (OS) is the master controller for all of the activities that take place within a computer. Ex: Microsoft Windows XP, Mac OS, Linux, UNIX The operating system also interacts with the next functional layer called application software.ATHENA How is software categorized?ATHENA What does an operating system do? Example:ATHENA Personal Computer Operating Systems Windows, Mac OS, Linux, Unix, and DOS What’s the best-selling operating system?ATHENA Personal Computer Operating Systems Microsoft Windows is the most popular, and is installed on over 80% of the world’s personal computers UNIX was developed in 1969 at AT&T’s Bell Labs Linux was developed in 1991 DOS (Disk Operating System) was developed by MicrosoftATHENA Personal Computer Operating Systems Different operating systems are needed for different computing tasks: • Single-user operating system – Ex: MS-DOS, Windows 3.1, Windows 3.11 • Multi-user operating system – Ex: Windows Server 2000/2003 • Network operating system – Ex: Linux, Unix, Windows Server 2000/2003 • Multitasking operating system – Ex: Windows Server 2000/2003 • Desktop operating system – Ex: Windows 95, Windows Me, Windows XPATHENA Summary Software How is software categorized? operating system Overview What does an operating system do?ATHENA