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Types & Role of Operating Systems
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Networking
The O/S has an important role in networking, such as connecting to the internet.
TCP/IP is built into all major operating systems.
It also has built in networking utilities like traceroute, IP config & ping.
Role of Operating Systems
Security
Your O/S comes pre-installed with tools to help protect your computer from threats.
Examples include anti-virus, firewalls, user authentication & backup facilities.
Memory Management
Multi-Tasking
The O/S assigns & unassigns memory to each application running so they can run.
It also manages virtual memory to ensure efficient use of the resources available.
The operating system has a number of extremely important responsibilities.
Examples include:
- Networking
- Security
- Memory Management
- Multi-Tasking
- Device Drivers
The O/S will assign small amounts of the processor time to each application.
This allows multiple applications to run at once.
Device Drivers
Your O/S allows peripheral devices to input & output data to the computer system.
It comes pre-installed with a range of drivers to allow for different devices to communicate with your computer.
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Types & Role of Operating Systems
Real-Time Operating Systems
This processes data as soon as it enters the computer system.
This allows the computer system to respond immediately to input.
Used in embedded devices, automatic systems & in aircraft systems.
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Types of Operating Systems
Single-User, Single-Task Operating Systems
This can only be used by one person at a time, using a single application.
This was very popular in older mobile phones (not smartphones) as well as in personal digital assistants.
The software that allows us to interact with the computer system, as it controls the operation of the computer.
There are different types that handle tasks & users differently though.
Single-User, Multi-Tasking Operating Systems
This is designed for only a single user at a time, but can run multiple applications simultaneously.
We see this used on general purpose computing devices like smartphones, tablets and personal computers.
Multi-User Operating Systems
This allows many different users to make use of a computer system at the same time.
Powerful servers, supercomputers and mainframes make use of multi-user operating systems.