Examples and Functions of Operating System

Welcome to class!

In today’s class, we will be talking about examples and functions of operating system. Enjoy the class!

MS-DOS: Microsoft Disk operating system commonly
Noval: This is usually used in a network environment and linked together to share resources.
UNDC: Usually used in a multiuser environment where many people can use one log computer at the same time.
Windows Operating System: Can be defined in a single microcomputer or a network environment.

All operating systems must be the same and can be divided into three:

Allocating system resources: Operating system directs the traffic (movement) inside the computer deciding what resources will be used and for how long.
Time: The CPU time is divided into time slices which are measured in milliseconds. When a task starts, a certain number of time slices is assigned. When the time expires, another task gets the turn to start; the first task must wait until it has another turn. Tasks are assigned so that the high priority task gets more time slices than the low priority task.

Memory: The memory must be managed at all times. One way to help the traffic arm is to use virtual memory, which includes disk space as main memory. It is slower to put data on the hard disk but it increases the amount of time. When the memory gets full, some of the data is paged out to the hard disk. This is called swapping.
Input and output flow control: The OS reads data that are coming in data form from the disk and signals the printer to print and send data. To speed up the output to the printer, most OS allows print spading, where the data to be printed is first put in the file, this helps to speed up the process.

Boot process: When the computer is switched on the boot program that is resided in Rom initialize the setup of the computer, the then load the rest of the operating system from the banking storage (hardware) in the RAM.
The operating system does the work of sharing and accounting of the computer resources
The operating system handles the input and output of data and information.
An operating system controls interaction and program control
The operating system handles the management of memory.
The operating system handles the management of the hardware.
Operating system acts as an interface between the user and the computer
The operating system handles multitasking and multiprogramming.
The operating system handles protection and error trending.

The computer system software is the ___ part of the computer
(a) visible (b) invisible (c) hard (d) soft
Software contributes to the ____ and ____ of the computer system
(a) hard and soft(b) clean and unclean (c) straight and crooked (d) control and performance
The set of instructions designed to efficiently manage the resources of the computer system is known as (a) conducting system (b) producing system (c) software system (d) operating system
Examples of operating systems are the following except (a) MS-DOS (b) Noval
(c) Doors (d) Windows
RAM means (a) Routing Access Memory (b) Return Access Memory (c) Round Access Memory (d) Random Access Memory

In our next class, we will be talking about Computer Application Software. We hope you enjoyed the class.

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