Operating Systems OS.1

Operating Systems(OS)

Hello! visitors today I think discuss about OS.It important to all computer users,etc..
The system software that manages and controls the activities of the computer.Operating system decides which computer resource will be used,which computer program will be run,and the order in which the activities take place.An Operating System performs three main functions.

1.Allocation and Assignment of system Resources
 
The Operating System allocates resources to the application jobs in the execution sequence.It provides locations in primary memory for data and programs and controls I/O devices.

2.Scheduling 

Many other functions or activities will be carried out at the same time while you are working with Computer.The Operating System decides when to schedule the jobs and when to execute them.
For example; while a program running.the Operating System schedules the use of input,and output devices.

3.Monitoring

OS monitors the activities of the Computer system and it keeps a track of each computer job;like what programs are used,at what time,etc.Most of the OS are actually stored in a disk where primary storage has easy access to it.Whenever parts of the OS are required by activated application,it is transferred to the main storage and gets loaded to it.
There are number of different types of OS in common use.The IBM PC(Personal Computer) was introduced way back in 1981 and was originally supplied with an OS called DOS (Disk Operating System)later on,Microsoft introduced Windows and this is the OS that is most widely used in PCs,Laptops,TAB,Mobile phones,etc.today.

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