Type of Software
System software
The software that
controls internal computer operations is called system software.
Operating System
Hardware is nothing but finely designed machine. An
operating system is used to control all other operations of computer system.
An operating system is a program
which acts as an interface between a user and hardware.
It controls and
coordinates the use of the hardware among various application programs for the
various users.
Assembler
The assembler is used to convert program written in assembly
language to machine language.
Operating System Function’s
Operating system function’s broadly fall into two
categories-
Essential
function, Monitoring function and Service function
1.
Handling I/O operations i.e. device management
2.
Errors and interrupt handling
3.
Job scheduling i.e. process management
4.
Security and protection of program
5.
Providing user interface
6.
Resource allocation and handling
Type of Operating System
There is different type of OS which runs upon different type
of hardware
1.
Single User OS
2.
Multi-user OS
3.
Time Sharing OS
4.
Real Time OS
5.
Multiprocessing OS
6.
Interactive OS
1.
Single User OS
In this only one user program can be
supported and executed by it at any point of time i.e. single user use this OS
at a time.
2.
Multi-user
OS
As the name suggested, multiple user use
this at a time. These active programs are executed using some techniques one by
one.
3.
Time Sharing OS
In this each active program given a fair
share of CPU time if the time elapses or an I/O operation is requested, CPU
shifts over the next job and previous job hold on wait .It the job is complete
, it handed the job to I/O manager.
4.
Real time OS
In this, every job has a fixed deadline. If
the job doesn’t complete in this deadline, this situation is called deadline overrun.
5.
Multiprocessing OS
In this, multiple processor working at a
time to handle more than one job. In this the load shared to multiple
processors.
6.
Interactive OS
These are GUI based OS which give
interactive interface to the user.
Some Commonly Used Operating System
1.
UNIX
It is a multiuser, multitasking OS. UNIX
was one of the first operating system to be written in high- level programming
language, namely C.
Due to its probability, flexibility and
power, UNIX has become a leading operating system for workstations. Historically,
it has been less popular in the personal computer market.
2.
Linux
Linux is one of the popular versions of
UNIX OS. It is open source as its source code is freely available. Its
functionality list is quite similar to UNIX.
3.
Windows
It is a GUI based OS by Microsoft .It gives
a virtual desktop operating graphical “windows” displaying the content of
electronic file and folder with single mouse click, rather than typing command.
4.
BOSS(Bharat Operating System Solutions)
It is a free and open source GNU/Linux
distribution. This software package has been described as “India’s own PC
operating system.
5. Solaris
It is a free Unix-based OS introduced by
Sun Microsystem.
6.
Mobile OS
It is an operating system that operates a
smart-phone, tablet, PDA or other mobile device –Android, Symbian, and IOS.
This post is about working with operating system I hope this will helpful for you ,In the next post we will talk about introduction to C++. There is also left some other topics in between ,it is better to prefer book for those.
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