Operating system is a program that runs on the computer and it is a software component of computer system. The major tasks of operating system are recognizing input from keyboard, sending output to the display screen, keeping track of files and directories, and controlling of devices. The purpose of operating system is to organize and control hardware and software.
The types of operating systems are:
Generally the operating systems are five types based on the computers they control and the sort of applications they support.
1. Real-Time operating system (RTOS): RTOS is a multi tasking operating system. This type of operating system has very little user-interface capability and no end user utilities. It gives quick and predictable response to events. The real-time operating systems have an event-driven and time-sharing design. Event-driven works depends upon priorities of tasks and time-sharing design works depends upon clock interrupts. The purpose of RTOS is managing the resources of computer.
2. Multi-user and single-user operating systems: The multi-user operating system allows two or more users to run program at the same time. Time-sharing system is one of the multi-user operating system. The single-user operating system allows only single user to run program at a time.
3. Multi-tasking and single-tasking operating systems: Multi-tasking allows running of more than one program at a time. The two different types of multi-tasking operating systems are pre-emptive and co-operative.
The types of operating systems are:
Generally the operating systems are five types based on the computers they control and the sort of applications they support.
1. Real-Time operating system (RTOS): RTOS is a multi tasking operating system. This type of operating system has very little user-interface capability and no end user utilities. It gives quick and predictable response to events. The real-time operating systems have an event-driven and time-sharing design. Event-driven works depends upon priorities of tasks and time-sharing design works depends upon clock interrupts. The purpose of RTOS is managing the resources of computer.
2. Multi-user and single-user operating systems: The multi-user operating system allows two or more users to run program at the same time. Time-sharing system is one of the multi-user operating system. The single-user operating system allows only single user to run program at a time.
3. Multi-tasking and single-tasking operating systems: Multi-tasking allows running of more than one program at a time. The two different types of multi-tasking operating systems are pre-emptive and co-operative.
- Pre-emptive: This type of operating system divides the CPU time and dictates one slot to each program. The salaries and Linux support pre-emptive multi-tasking.
- Co-operative: In co-operative multi-tasking each program will give time to other program in defined manner. For example MS Windows prior to Windows 95 in co-operative multi-tasking.
In single-tasking only one program allowed running at a time.
4. Distributed operating system: The distributed operating system manages a group of independent computers and makes them appear in a single computer. The computers in a group work use the distributed operating system.
5. Embedded system: This type of operating systems is used in embedded computers. The embedded system deigned to operate in small machines like PDAs and it is more efficient system. The common examples of embedded operating system are Windows CE and Minix3.
4. Distributed operating system: The distributed operating system manages a group of independent computers and makes them appear in a single computer. The computers in a group work use the distributed operating system.
5. Embedded system: This type of operating systems is used in embedded computers. The embedded system deigned to operate in small machines like PDAs and it is more efficient system. The common examples of embedded operating system are Windows CE and Minix3.
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