Questions and Answers
An operating system is a set of software that manages computer hardware resources and provides common services to computer programs.
True
Malicious software is a type of utility software that performs maintenance or management tasks.
False
Chrome OS is a multi-user, single-tasking operating system.
False
Application software is platform-independent, meaning it can run on any operating system.
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Memory management is a function of application software.
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Study Notes
Operating Systems
- Definition: A set of software that manages computer hardware resources and provides common services to computer programs
- Functions:
- Process management: creates, runs, and manages processes (programs)
- Memory management: allocates and deallocates memory for programs
- File system management: provides access to files and storage devices
- Security: protects against unauthorized access and malicious code
- Input/Output management: manages input/output operations between devices and programs
- Types:
- Single-user, single-tasking: manages a single user and task (e.g., MS-DOS)
- Multi-user, single-tasking: manages multiple users, but only one task per user (e.g., early Unix)
- Multi-user, multi-tasking: manages multiple users and multiple tasks concurrently (e.g., modern Windows, macOS, Linux)
- Examples:
- Windows
- macOS
- Linux
- Chrome OS
Application Software
- Definition: A set of programs that performs specific tasks for the user
- Types:
- Productivity software: helps users with tasks such as word processing, spreadsheet analysis, and presentation design (e.g., Microsoft Office)
- Utility software: performs maintenance or management tasks such as disk formatting, backups, and virus scans (e.g., Norton Antivirus)
- Malicious software: harmful programs that exploit vulnerabilities or cause damage (e.g., viruses, trojans, spyware)
- Entertainment software: provides entertainment such as games, video players, and media editors (e.g., Adobe Premiere)
- Educational software: teaches or trains users on specific skills or subjects (e.g., language learning apps)
- Characteristics:
- Executable: can be run or executed by the computer
- Platform-dependent: designed to run on specific operating systems or hardware
- User-friendly: provides an interface for users to interact with the program
- Customizable: can be tailored to meet specific user needs or preferences
Operating Systems
- Manage computer hardware resources and provide common services to computer programs
- Perform process management by creating, running, and managing processes (programs)
- Allocate and deallocate memory for programs through memory management
- Provide access to files and storage devices through file system management
- Protect against unauthorized access and malicious code through security features
- Manage input/output operations between devices and programs through input/output management
- Come in three types:
- Single-user, single-tasking: manage a single user and task (e.g., MS-DOS)
- Multi-user, single-tasking: manage multiple users, but only one task per user (e.g., early Unix)
- Multi-user, multi-tasking: manage multiple users and multiple tasks concurrently (e.g., modern Windows, macOS, Linux)
- Examples include Windows, macOS, Linux, and Chrome OS
Application Software
- Perform specific tasks for the user
- Come in various types, including:
- Productivity software: helps with tasks like word processing, spreadsheet analysis, and presentation design (e.g., Microsoft Office)
- Utility software: performs maintenance or management tasks like disk formatting, backups, and virus scans (e.g., Norton Antivirus)
- Malicious software: harmful programs that exploit vulnerabilities or cause damage (e.g., viruses, trojans, spyware)
- Entertainment software: provides entertainment like games, video players, and media editors (e.g., Adobe Premiere)
- Educational software: teaches or trains users on specific skills or subjects (e.g., language learning apps)
- Characterized by being:
- Executable: can be run or executed by the computer
- Platform-dependent: designed to run on specific operating systems or hardware
- User-friendly: provide an interface for users to interact with the program
- Customizable: can be tailored to meet specific user needs or preferences
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Description
Learn about the definition and functions of operating systems, including process management, memory management, file system management, security, and input/output management.