What is Programming?

Programming is writing a solution of a problem for a computer.
  This is the job of a computer programmer.  He writes
instructions for a computer to execute and thus solve
the problem.

There are four fundamentals steps involved in solving a
problem on computer. These steps are:
1. Understanding the problem.
2. Program algorithm and flowchart.
3. Coding the program and test runs.
4. Documentation & implementation.

What is an operating system?

Operating system is a master control program (a software) that manages the computer's internal functions and provides a means to control the computer's operations.  It is a bridge between the computer hardware and the applications using the system. The operating system must be in place before you can run an application software.  A computer consists of  processors, main memory, clocks, terminal, disk, network interfaces and other I/O devices. OS is a basic software that manages all the system resources and enables the use of an interface and manage its operations.

What is Multimedia?

A computer system has the ability to present information by integrating text, graphics, sound and video.  The basic hardware components for multimedia are the CD-RDM device, Stereo sound, Video and Speakers, mic, camera etc.
Multimedia information includes images, video, audio, 2D and 3D graphics, animation, text

What are Viruses?

A computer virus is a small programming code that was designed deliberately  to spread without a computer user's knowledge and perform some type of action the user did not ask for.  Different types of viruses spread in different ways so they need to be tackled differently.  However a good antivirus software can take care of all types of viruses.

Viruses spread through diskettes, CD-ROMS, Email attached, shared network files and the internet.  The internet has provided a platform for fast and global spread of virus.

What is networking ?

Computers have learned to share date, application and hardware devices, connecting computers together is called networking.
Each computer on a network has his own network interface card (NIC). A NIC is a mediator between the computer CPU and cable connecting it to the network. The networking cables are coaxial, twisted pair and fiber optic. The cables have different transmission capabilities and are suitable for specific network configuration. Two main network configurations are peer-to-peer and client / server.

How to create your own web page ?

Creating your own web page is easy. The programming language for the web in HTML (Hypertext Mark up language). You should have a computer, minimum requirement is 486 CPU and any windows operating system (Windows 95, 95, 2000, Xp). Then you need a web browser installed in your machine either Netscape's Navigator/ Communication or Microsoft's internet Explorer.

What is a web page ?

A web page is a simple text file that contains text along with a set of HTML tags. These HTML tags describe how the text should be formatted when a browser displays it on the screen. The tags are simple instructions that tell the web browser how the page should look when it displays the page. The web browser interprets these tags to decide how to format the text into the screen.

What is home page ?

When you access a web site, through your browser, the first screen or page of that web site is called Home Page. This page normally contains hyper-links to other pages within and outside of that site. Home page is just like the title page of a book.

What is HTML ?

HTML stands for Hyper Text Markup Language. A `Markup language' is a computer language that describes how a page should be formatted. All web browsers are able to understand interpret this computer languages. By adding HTML tags, you can create headlines, add colors, create lists, change fonts, add images and add links to other web sites.

What is a Web Browser ?

A web browser is a computer programme that does two things. First a web browser knows how to go to a web server on the Internet and request a page so that the browser can put the page through the network to your machine. Secondly, a web browser knows how to interpret a set of HTML tags within the page to display the page on your screen in a proper way.

What is web server ?

Web documents or pages are stored on internet connected computers called web servers. When a web server receives a request from a web browser, its special software responds to a web browser's request for a page and sends the page to the web browser through the internet.
Web servers are normally more powerful than an average desktop computer, but any computer with the right software can be a web server.
When you send a request to a web server through your browser, the server sends a copy of a page back through the internet to your computer. The copy is stored temporarily on your hard disk so that it can be displayed in the browser window.

How information flows on the net ?

When a user starts the browser. The browser loads on home page a HTML document.
A server listens to the network, waits for document requests with the client's unique IP address.
Upon receipt the server verifies whether the requesting browser is allowed to retrieve documents from the server.
Then it checks for the presence of the requested document, if present, the server sends a copy  of  the requested document to the browser.
When the requested document arrives the browser processes these HTML documents.
The client's request and the server's response is formatted according to the dictates of the Hyper Text Transfer Protocol (HTTP) standard.