IT-TECH

What is HTML? ·         In Year 1989, Tim Berners-Lee invented WWW. ·         In Year 1991, Tim Berners-Lee invented HTML. ·         HTML stands for Hyper Text Markup Language. ·         HTML is the standard markup language for creating Web pages. ·         HTML describes the structure of a Web page. ·         HTML consists of a series of elements. ·         HTML elements tell the browser how to display the content. ·         HTML elements label pieces of content such as " this is a heading ", " this is a paragraph ", "this is a link" , etc.   Below given is the basic HTML syntax: Note:- Whenever you save a HTML file must use .HTML/.HTM extension after your file name. Never ...

  Fifth Generation Computers The technology behind the fifth generation of computers is AI. It allows computers to behave like humans. It is often seen in programs like voice recognition, area of medicines, and entertainment. The speed is highest, size is that the smallest and area of use has remarkably increased within the fifth generation computers. In order to summarize the features of varied generations of computers, it is often said that a big improvement has been seen as far because the speed and accuracy of functioning care, but if we mention the dimensions, it’s being small over the years. The value is additionally diminishing and reliability is in fact increasing. Main characteristics of fifth generation computers are: Main electronic component - Based on artificial intelligence, uses the Ultra Large-Scale Integration (ULSI) technology and parallel processing method (ULSI has millions of transistors on a single microchip and Parallel processing method use two or...

  Fourth Generation Computers: Micro-processors (1971-Present) ·        In 1971 First microprocessors were used, the large scale of integration LSI circuits built on one chip called microprocessors. ·        The computers using microchips were called microcomputers. This generation provided the even smaller size of computers, with larger capacities. That’s not enough, then Very Large Scale Integrated (VLSI) circuits replaced LSI circuits. ·        Technologies like multiprocessing, multiprogramming, time-sharing, operating speed, and virtual memory made it a more user-friendly and customary device. Main characteristics of fourth generation computers are: ·        Main electronic component- Very large-scale integration (VLSI) and the microprocessor (VLSI has thousands of transistors on a single microchip). ·        Memory- ...

  Third Generation Computers: Integrated Circuits. (1964-1971) During the third generation, technology envisaged a shift from huge transistors to integrated circuits, also referred to as IC. The most feature of this era’s computer was the speed and reliability. IC was made from silicon and also called silicon chips. A single IC, has many transistors, registers, and capacitors built on one thin slice of silicon. The value size was reduced and memory space and dealing efficiency were increased during this generation. Programming was now wiped out Higher level languages like BASIC (Beginners All-purpose Symbolic Instruction Code). Minicomputers find their shape during this era. Main characteristics of third generation computers are: ·         Main electronic component - Integrated circuits (ICs) ·         Programming language - High-level language ·         Memory - Lar...

  Second Generation Computers: Transistors (1956-1963) Second-generation computers used the technology of transistors rather than bulky vacuum tubes. Another feature was the core storage. A transistor may be a device composed of semiconductor material that amplifies a sign or opens or closes a circuit. It reduced the dimensions and price and thankfully the warmth too, which was generated by vacuum tubes. Central Processing Unit (CPU), memory, programming language and input, and output units also came into the force within the second  generation. Programming language was shifted from high level to programming language and made programming comparatively a simple task for programmers. Languages used for programming during this era were FORTRAN (1956), ALGOL (1958), and COBOL (1959). Main characteristics of second generation computers are:- ·         Main electronic component - Transistor. ·         ...

  First Generation Computers: Vacuum Tubes (1940-1956) The technology behind the primary generation computers was a fragile glass device, which was called vacuum tubes. These computers were very heavy and really large in size. These weren’t very reliable and programming on them was a really tedious task as they used high-level programming language and used no OS. First-generation computers were used for calculation, storage, and control purpose. They were too bulky and large that they needed a full room and consume rot of electricity. Main first generation computers are: ENIAC: Electronic Numerical Integrator and Computer, built by J. Presper Eckert and John V. Mauchly was a general-purpose computer. It had been very heavy, large, and contained 18,000 vacuum tubes. EDVAC: Electronic Discrete Variable Automatic Computer was designed by von Neumann. It could store data also as instruction and thus the speed was enhanced. UNIVAC: Universal Automatic Computer w...

  What is Computer? The term "computer" is derived from the Greek word " compute " which means to calculate. A computer is a programmable electronic device that accepts raw data as input and processes it with a set of instructions (a program) to produce the result as output. It renders output just after performing mathematical and logical operations and can save the output for future use. It can process numerical as well as non-numerical calculations. A computer is designed to execute applications and provides a variety of solutions through integrated hardware and software components. It works with the help of programs and represents the decimal numbers through a string of binary digits. It also has a memory that stores the data, programs, and result of processing. The components of a computer such as machinery that includes wires, transistors, circuits, hard disk are called hardware. Whereas, the programs and data are called software. Generations of Compute...

  What is the Internet??? The Internet is a global network of billions of computers and other electronic devices. With the Internet , it's possible to access almost any information, communicate with anyone else in the world, and do much more. You can do all of this by connecting a computer to the Internet , which is also called  going   online.  When someone says a computer is   online, it's just another way of saying it's connected to the Internet . What is the Web? The  World Wide Web —usually called the  Web  for short—is a collection of different websites you can access through the Internet . A website   is made up of related text, images, and other resources. Websites can resemble other forms of media—like newspaper articles or television programs—or they can be interactive in a way that's unique to computers. The purpose of a website can be almost anything: a news platform, an advertisement, an online...