Wednesday, 29 June 2022

The HTML

The Hyper Text Markup Language (HTML)
General Information:
->   HTML is a formatting language that's used for static web page design.

->   It's not a programming language.

->   There are mainly three types of World Wide Web (WWW) documents or pages.

->   Static web pages, Dynamic web pages and Active web pages.

->   JavaScript, Cascading Style Sheet (CSS) and Hypertext Pre-processor (PHP) also known as Personal Home Page, uses for designing the Dynamic / Active web pages.

->   XML: Extensible Markup Language: It has the same functionality as like HTML, but XML provides flexibility to the developer. It is used to transport data from one application or script to another.

HTML Tags:

-> The html tags are categorized into a container tag or an empty tag.

Container Tags:

Tags comes in pair with an opening tag and closing tag, called container tags.

-> Opening tags indicating the start of the formatting. e.g. <b> Opening tag for bold the text.
-> Closing tags indicating the end of the formatting. e.g. </b> Closing tag for bold the text.

Empty Tags:

In contrast, an empty tag has only an opening tag.
e.g. <br> Break tag: It is used to break the line or new-line.

Structure of HTML:

Note: HTML is not case-sensitive. Its tag may be written in upper case or lower case.

<html>

     <comment> This section used to identify the page as a web page </comment>

               <head>  <title>  The optional Section will appear in the title bar of the web browser. </title>  </head>

               <body>
                  The actual content of the document.
               </body>

</html>

Where are HTML tags written?

-> Open a text editor / notepad.

-> Write the above tags to your opened text editor

-> Save the text editor using (ctrl+s) as "filename.html" in any folder of your computer.

-> Go to the folder.

-> "double click" on "flilename.html", it will be displayed in the browser.

Advantages of HTML:-

-> It can be used in any operating system platform.

-> HTML is compatible with all major browsers and widely supported by web development tools.

-> Hyperlinking one document to another is easy in HTML.

-> It is simple to edit and fast to download documents.

-> HTML is free and independent of platforms and devices.

Limitations:-

-> HTML is neither a programming language nor a desktop publishing tool.

-> The displayed file is static in nature and cannot be updated by any process.

Monday, 20 June 2022

Types of Computer

Computer Generations:

"Computer Generation" refers to the advancements of technology, speed, storage capacity and the reduction of the prices and the size of the computers.

(i) First Generation: (1946-1955) - Made by using Vacuum tubes, Examples: ("ENIAC" and "UNIVAC").

(ii) Second Generation: (1956-1965) - Made by using Transistor.

(iii) Third Generation: (1966-1975) - Made by using Integrated Circuits (IC) chips.

(iv) Fourth Generation: (1976-2010) - Made by using Very Large Scale Integration (VLSI) Technology.

(v) Fifth Generation: (2010-Present) - Made by using Artificial Intelligence (AI).

Computer Models:

Models: Depending on shape, sizes and capabilities modern computer are mainly four types.

(i) Micro Computers,

(ii) Mini Computers,

(iii) Mainframe Computers,

(iv) Super Computers

Computer Types:

Based on principle of operations, computers are classified into following three types:

(i) Digital Computers,

(ii) Analog Computers,

(iii) Hybrid Computers.

Intelligence Quotient (I.Q.) of the COMPUTER

How to compute the intelligence quotient (I.Q.) of any object or system or animal:

$Intelligence \;Quotient (I.Q.)$ = $\frac{Mental \;Age\; of\; the\; System}{Chronological \;Age \;of\; the\; System}*100$

Since the Mental Age of the non-living System = 0.

$Intelligence\; Quotient (I.Q.)$ = $\frac{0}{Chronological\; Age\; of\; the\; System}*100$

$I.Q. \; of\; the\; Computer \;System$ = $\frac{0}{Chronological\; Age\; of\; the\; System}*100$

Still the I.Q. of the Computer System = 0.

Q. What is the I.Q. of the computer?

IPO Cycle

Introduction to Computer: - The computer is a modern electronic machine that can receive data or information and can store & process the data as per instructions and finally can display the results accurately is named as Computer.

In other words, the computer is a modern electronic device that performs basically three operations in a sequence.

1. It receives data (Input).

2. It processes data (Process).

3. It emits data (Output).

This cycle of operations in a computer is known as input-process-output (IPO) cycle.

Q. 1. What do you mean by I-P-O cycle in the computer ?

Tech-in-Computer