PROGRAMMING IS FUN

Commonly Used OS Linux - Linux is a free and open software which means it is freely available for use and since its source code is also available so anybody can use it, modify it and redistribute it. It can be downloaded from www.linux.org . It is a very popular operating system used and supported by many companies. The defining component of this operating system is the Linux kernel. Unix – A popular multi-user , multitasking operating system developed at  Bell Labs in the early 1970s. UNIX was one of the first operating systems to be written in a high level programming language, namely C. Due to its portability, flexibility and power, UNIX is widely being used in a networked environment. Solaris - It is a free Unix based operating system introduced by Sun Micro systems  in 1992. It is now also known as Oracle Solaris. Solaris is registered as compliant with Single UNIX Specification. It is quite scalable and is used on virtual machines. BOSS - BOSS (Bhar...

    Types of Operating System   Single User OS-> Operating systems for Personal Computers (PC) are single-user OS. Single user OS are simple operating system designed to manage one task at a time. MS-DOS is an example of single user OS.    Multiuser OS-> It is used in mini computers or mainframes that allow same data and applications to be accessed by multiple users at the same time.   Multiprocessing OS-> It has two or more processors for a single running process. Processing takes place in parallel and is also called parallel processing . Each processor works on different parts of the same task. Since execution takes place in parallel, they are used for high speed execution, and to increase the power of computer. Linux, UNIX and Windows 7 are examples of multiprocessing OS.    Time Sharing OS-> It allows execution of more than one tasks or processes concurrently. For this, the processor time is divided ...

Operating System An operating system (OS) is  system software  that manages  computer hardware  and  software  resources and provides common  services  for  computer programs . It is an interface between hardware and user which is responsible for the management and coordination of activities and the sharing of the resources of a computer. It hosts the several applications that run on a computer and handles the operations of computer hardware . Need for an Operating System In earlier day’s user had to design the application according to the internal structure of the hardware. Operating System was needed to enable the user to design the application without concerning the details of the computer’s internal structure. In general the boundary between the hardware & software is transparent to the user. Usage of Operating System:- 1.        Easy interaction between the huma...

Application Software The basic aim of making & running a computer is to get work done from it. So, programs which are developed in order to serve a particular application are known as application software. An application software can be of two types:-           General Purpose Application Software           Customized Application Software General Purpose Software Some of the application software is made for the common users for day to day applications and uses. These are also referred as Office Tools. Some of the popular types of general purpose application software are discussed below: ·            1.  Word Processor: Word processor is a general purpose application software used to create documents. It allows us to create, edit and format documents. We can add clip art  and other graphics into the document. Popular examples of Word proces...

Utility Software A utility software is one which provides certain tasks that help in proper maintenance of the computer. The job of utility programs is to keep the computer system running smoothly. Nowadays many utility softwares are part of the operating system itself. Even if there is no utility software on your computer, the computer works but with the right kind of utility software loaded, the computer becomes more reliable and even its processing speed increases. Some of the commonly use utility softwares are antivirus, Disk defragmenter, backup, compression etc. 1.  Antivirus Antivirus or anti-virus software sometimes known as anti-malware software, is  computer software  used to prevent, detect and remove  malicious software . The antivirus keeps a watch on the functioning of the computer system. If a virus is found it may alert the user, flag the infected program or kill the virus. Some of the common types of v...

System Software System Software is the software that is directly related to coordinating computer operations and performs tasks associated with controlling and utilizing computer hardware. These programs assist in running application programs and are designed to control the operation of a computer system. System software directs the computer what to do, when to do and how to do. System software can be further categorized into ·         Operating System ·         Language Translators 1. Operating System An operating system act as an interface between the user and hardware devices. It is a set of programs that activates & co-ordinates various hardware resources (processor & input/output devices) & the processes that use these resources on a computer system. It acts as a resource manager to make optimum use of resources. Without operating system a computer cannot do anything...