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Questions and Answers
What is the function of a memory controller?
What is the function of a memory controller?
Synchronize access to the memory
Define the term 'Volatile' in the context of storage structure.
Define the term 'Volatile' in the context of storage structure.
Loses its contents when power is removed
What is the main difference between a batch operating system and a multitasking operating system?
What is the main difference between a batch operating system and a multitasking operating system?
Batch OS users do not interact with the computer directly, while multitasking OS allows multiple users to share the computer simultaneously
What is the primary purpose of a bootloader?
What is the primary purpose of a bootloader?
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Explain the concept of multiprocessing in the context of operating systems.
Explain the concept of multiprocessing in the context of operating systems.
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Study Notes
What is an Operating System?
- An operating system (OS) is a system software that allows a user to run other applications on a computing device and acts as an intermediary between a user of a computer and the computer hardware.
Functions of an Operating System
- Allocation of resources
- Memory management
Operating System Views
User View
- An extended machine that hides the lower level details
System View
- Resource allocator
- A resource is whatever any process needs to use to complete its task, such as:
- Memory
- CPU
- Files
- Printer
- Data or any I/O devices
Examples of Operating Systems
- Windows
- Linux
- Mac OS
- Ubuntu
- Android
- iOS
Goals of an Operating System
- Execute user programs
- Make solving user problems easier
- Make the computer system convenient to use
- Use the computer hardware and resources in an efficient manner
Computer System Operation
- A modern general purpose computer consists of one or more CPUs and a number of device controllers connected through a common bus that provides access to a shared memory
- Each device controller is in charge of a specific type of device
- The CPU and controllers can execute concurrently (at the same time) competing for memory cycles
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Description
Test your knowledge about operating systems, their functions, and components. Learn about resource allocation, memory management, and the user and system view of operating systems.
