AY2024 Sem2 C0001F L03 Software Lesson Notes
Page 1: Introduction to Operating Systems
Modern computing revolves around operating systems (OS).
Operating systems are essential software that facilitate interaction between hardware and applications.
Used in various devices from desktop computers to smartphones, they enhance digital experiences.
Acknowledged as the “unsung heroes” of computing.
Page 2: Lesson Outcomes
Differences Between System Software and Application Software
Functions of an Operating System
Ways operating systems can enhance processing efficiency.
Comparison of Commonly Used Operating Systems
Page 3: Differences Between System and Application Software
System software operates at a low level, managing hardware and system resources.
Application software is focused on user tasks, such as document editing or web browsing.
Page 4: Types of Software
System Software: Microsoft Windows, Linux, MacOS.
Application Software: Examples include Gmail, McAfee.
Page 5: System Software Overview
Definition: Provides direct control and management of hardware components.
Hardware Interface: Acts as a bridge between hardware and application software.
System Configuration: Allows the customization of computer settings.
Page 6: Types of System Software
Operating Systems: Manage hardware/software resources and provide platforms for applications.
Device Drivers: Enable communication between the OS and hardware components.
Utilities: Perform maintenance and optimization tasks.
Firmware: Low-level software embedded in hardware for basic control functions.
Page 7: Functions of System Software
Resource Management: Efficient allocation of hardware/software resources.
Hardware Abstraction: Provides a consistent interface to hardware.
Process Control: Manages scheduling and execution of processes.
Memory Management: Handles allocation and deallocation of memory.
Page 8: Application Software Overview
Designed to perform specific tasks for users, distinct from system software.
Examples include word processing, data analysis, and gaming.
Page 9: Functions of Application Software
Productivity: Facilitates specific tasks to enhance productivity (e.g., word processors, spreadsheets).
Entertainment: Games and multimedia applications provide leisure experiences.
Communication: Enables interaction through messaging and conferencing tools.
Data Management: Tools for organizing and analyzing data (e.g., CRM applications).
Page 10: Examples of Application Software
Word Processors: Microsoft Word, Google Docs.
Spreadsheets: Excel, Google Sheets.
Web Browsers: Chrome, Firefox.
Page 11: Comparison of System and Application Software
System software: foundational software managing hardware resources.
Application software: designed for specific user tasks, enabling distinct functionalities.
Efficiency in the computer ecosystem is achieved through this division.
Page 12: Team Activity 1 - Application Software
Pair programming activity to discuss examples of application software for study and leisure.
Roles: "Driver" posts to the Class Padlet, "Navigator" confirms the answers.
Page 13: Functions of Operating Systems
Discusses how operating systems enhance processing efficiency.
Page 14: Overview of Operating Systems
OS manage and coordinate computer components for reliable operation.
Page 15: Overview Video
A brief visual overview of operating systems (1:30 min).
Page 16: Overview of Operating Systems (continued)
Types of Operating Systems: Desktop, Mobile, etc.
Examples: iOS, Windows 10, Android.
Page 17: Functions of an Operating System
Process Management: Scheduling, executing, and terminating processes.
Memory Management: Allocates and manages memory resources.
File Management: Organizes files and directories for user access.
Input/Output Management: Coordinates data flow between devices.
Page 18: Process Management in Operating Systems
Process Creation: Management and allocation of resources.
Process Scheduling: Determines execution order.
Process Isolation: Prevents interference among processes.
Inter-Process Communication: Enables data sharing between processes.
Page 19: Memory Management in Operating Systems
Memory Allocation: Managing physical memory efficiently.
Memory Virtualization: Allows access to more memory than physically available.
Paging and Segmentation: Memory division techniques for efficient management.
Page 20: File Management in Operating Systems
File Manipulation: Actions like creating, reading, and writing files.
File Organization: Arranging files into directories for easy access.
File Permissions: Access control for users.
Page 21: Input/Output Management in Operating Systems
Device Drivers: Standardized interfaces for hardware.
Buffering: Temporary storage for managing transfer rates.
Spooling: Queuing jobs for efficient processing.
Error Handling: Detecting and recovering from I/O errors.
Page 22: Team Activity 2 - Operating Systems
Discussion on OS functions and examples of associated applications.
Page 23: Compare Commonly Used Operating Systems
Identification of common operating systems used across different platforms.
Page 24: Commonly Used Desktop Operating Systems
Windows 11: Modern interface, advanced security.
macOS: Intuitive design, Apple hardware integration.
Ubuntu: User-friendly Linux distribution.
Page 25: Commonly Used Mobile Operating Systems
Android: Most widely used mobile OS.
iOS: Apple’s OS for smartphones and tablets.
Windows Mobile: Familiar interface for certain devices.
Linux-based OS: Examples include Tizen, Sailfish OS.
Page 26: Commonly Used Server Operating Systems
Windows Server: Enterprise-level features and security.
Linux Server: Customizable and stable for server tasks.
Unix Server: Reliable multi-user server OS.
macOS Server: User-friendly features for businesses.
Page 27: Embedded Operating Systems
Definition: Run on specialized hardware such as appliances or IoT devices.
Features: Prioritize real-time performance and low power consumption.
Examples: FreeRTOS, VxWorks.
Page 28: Operating Systems for Gaming Consoles
Optimized for graphics rendering and low-latency processing.
Provides a user-friendly, controller-centric interface.
Page 29: Operating Systems for Networking Devices
Router OS: Manages networking tasks for efficient routing.
Switch OS: Handles data forwarding in switches.
Firewall OS: Provides robust network security features.
Wireless OS: Manages protocols for wireless networks.
Page 30: Operating Systems for Industrial Automation
Manage and monitor production processes, ensuring quality and efficiency.
Page 31: Operating Systems for Medical Devices
Require low-latency performance and robust security for patient safety.
Page 32: Operating Systems for Automotive Systems
Must provide real-time performance and fault tolerance for safety features.
Page 33: Operating Systems for Aerospace Applications
Critical for managing flight control and satellite communications.
Page 34: Operating Systems for Home Automation
Ensure seamless integration of smart devices and prioritize user-friendly interfaces.
Page 35: Operating Systems for Wearable Devices
Optimized for small screens and low power consumption, focusing on activity tracking.
Page 36: Operating Systems for Internet of Things (IoT)
Efficiently manage resources, providing real-time responsiveness and robust security.
Page 37: Team Activity 3 - Operating Systems
Pair programming activity for discussing assigned operating systems topics.
Page 38: Conclusion
Without operating systems, modern technology would not function as we know it.
They are crucial for driving innovation, productivity, and convenience.