Skip to main content

Posts

Showing posts from April, 2021

Difference between Linux and Unix-computer world

Difference between Linux and Unix LINUX Cost :   Linux can be freely distributed, downloaded freely distributed from magazines, books etc. Developed : Linux Kernel is developed by the community. Linux Torvalds oversees things. Price : Free but support is available for a price. Security : Linux has about 60-100 Viruses listed  till date. None of them activity spreading nowadays. Architectures : Originally developed for Intel x86 hardware, ports available for over two dozens CPU types including ARM. Examples : Ubuntu Fedora red hat, debia, Android etc. Processor : Dozens of different kinds.  UNIX Cost : Different flavors have different cost. Developed : Three biggest distributions are Solaris , IBM and HPUX.  Price : some free development use but support is available for a price.  Se curity : A rough estimate of Unix virus is between 85 - 120 viruses reported till date.  Examples : OS X, Solaris, all Linux  Processes : x86/x64, spar,...
Post a Comment
Read more

What is world wide web-computer world

  What is world wide web The world wide web is a collection of millions of file stored on thousand of computers all over the world. These files represent text document, pictures, videos and just about any other kind of information that has even been recorded in computer files. The web is the largest and most diverse collection of information ever assembled.   The world wide web is consists of large number of websites that contain a number of web pages which is maintained by the various web server.  Websites are collection of web pages  A web page is a HTML document In 1980, Tim Berners-Lee, contractor at the European organisation for nuclear research built ENQUIRE, as a personal database of people and software models. In 1984 berners-lee returned to CERN, and considered its problems of information management physics from Around The World needed to share data. In 1993 there are 50 Web Services across the world. In 1994 the total number of website was still minute comp...
Post a Comment
Read more

Popular posts from this blog

Deadlock in operating system-computer world

  Deadlock in operating system-computer world Deadlock :  In a multi-programming environment, many process may complete for a minute number of resources. A process make a request for a resource and if the resource is not available at that time, the process enter In a waiting state. A waiting state process is never again-able to change state because the resource it has requested is held by other waiting process. This situation is called deadlock. So we can say that a process is said to be deadlock when it is waiting for an event or resources which will never occurs.   so we can say that in this situation none of the process gets executed  since the resource it needs, is held by some other process which is also waits for some other resource to be released.  Let's assume that there are three process P1, P2, p3 and three different resources R1, R2 and R3. R1 is assigned to p1, R2 is assigned to P2 and R3 is assigned to P3.   After somet...
9 comments
Read more

What is sound card, video card, TV tuner card and network adapter card-computer world

 What is sound card, video card, TV tuner card and network adapter card Sound card :  Sound card is also known as audio card, sound sound board or audio output device. Sound card is a expansion card that provide the input and output of audio signals to and from a computer under control of computer programs. It is an expansion card for producing sound on computer that can be heard by speakers and headphones.  Uses of sound card :  Sound card is used for for providing the audio component  for multimedia application such as video auditing , audio auditing .It is also used in the field of education.  Video card :  It is an expansion card that connect to a computer motherboard. Video card is also known as video adapter or video controller. It is used to create a picture on display. TV tuner card : A  TV tuner card is like a television tuner that allow single to be received by a computer. TV tuner c...
2 comments
Read more

Memory management in operating system-computer world

Memory management in operating system-computer world Memory management :   The function of operating system which manages the memory of a computer for the processing of the program this management is known as memory management. There are several programs that consist in memory, so it became to move programs and data around the memory of a memory management system is the collection of hardware and software procedures for the Managing various program consisting in the memory. Memory management play an important role in operating system to improve the speed speed of the computer system.   Memory management determines how  memory is allocated between the processes,  deciding which gets memory, when they receive it and how much they are allowed. When memory is allocated it determines which memory location will be assigned. Main memory refers to a physical memory that is the internal memory of the computer. Main memory is also known as RAM. The computer is able t...
1 comment
Read more