How many countries are there in the world?

Answer: 195

[For reference click here]

What is the difference between a laptop and a notebook?

The Notebook Computer

A standard notebook has the following features:

1. Ultralight. Less weight is better.
2. 4 - 5 hour battery life.
3. No internal floppy drive.
4. Minimal graphics subsystem.
5. No internal DVD or CD system.
6. 12" - 14" TFT screen.
7. Low profile (thin).
8. Integrated modem and network connection.
9. Smallest possible keyboard that retains functionality.
10. Low power consumption Celeron/Centrino or Sempron style processor.

In essence a notebook computer is designed to provide mobile computing that won't break your back yet still offer all the power the mobile users requires for work and some leisure pursuits. This portability normally comes at a price. The level of miniaturization involved comes at a cost and high end notebooks can prove to be quite expensive.


The Laptop Computer

Now for the laptop computer. Again look at the name. A laptop is designed to sit on your lap and you can therefore expect it to be quite large and loaded down with features and power.

The standard laptop computer would have some ,if not all, of the following features:

1. 14" - 17" (widescreen) TFT screen.
2. Nvidia GeForce or ATI Radeon graphics subsystem.
3. Internal DVD-ROM or DVD-RW drive
4. Large full featured keyboard.
5. 3 hour (+/-) battery life.
6. Upgradeable.
7. Integrated modem, network, Bluetooth and Wi-Fi capabilities.
8. High quality integrate audio and speaker system.
9. Low power consumption, high performance Intel Centrino style processor.

From reading the above information you'll see that the notebook is the exact opposite of the laptop. Notebooks offer reasonable power and extreme portability. Laptops are designed to be capable of replacing an entire desktop PC if necessary whilst still offering desktop performance in a mobile platform. Hopefully this article has helped clear up the differences between both classes of portable computers. As time and technology moves on the line between laptop and notebook will continue to blur but for right now it's still clearly defined and driven by the demands of the portable computer market

[Reference Click Here]

What is the full form of VISA?

The funny thing is that people use it all the time but no one knows the full form of it.

VISITOR INTENTION TO STAY ABROAD

Why is the Dead Sea called the Dead Sea?

The Dead Sea is around 8.6 times more salty than a ocean. This salinity makes for a harsh environment where animals cannot flourish, because they cannot drink it, hence its name.
____

It is called dead because it is thought to be without life by most people.
There is however some algae that actually thrive in this water. They are specially adapted and to my knowledge are not found elsewhere in the world.
There may also be bacteria called halophilis, an archeabactera that can survive in extreme conditions.
____

Metaphorically, the Dead Sea is called that because water does not flow out of it. All rivers lead in, none go out--as if the river dies in it.

There is a thriving tourist industry as people visit the lowest place on earth, float on the water and take the salt and mud baths.

Also there is chemical industry that extracts the salt and potash and sells it around the world.
____

It is called the dead sea because no living thing can live in it. The amount of salt would cause any living thing to die as all its water will travel into the surrounding water. To understand why read up on diffusion and osmosis. However some very few types of bacteria can survive there, because they can handle extreme conditions.

Reference: http://wiki.answers.com/Q/Why_is_the_Dead_Sea_called_the_Dead_Sea#ixzz0cSzGIziZ

Some basic full forms of file formats you should know...

Document File Formats:-
DOC – Microsoft Word document
DOCX – Office Open XML Text document or Microsoft Office Word 2007 for Windows/2008 for Mac
PDF – Portable Document Format
HTML – HyperText Markup Language (.html, .htm)

Graphic File Formats:-
GIF – Graphics Interchange Format
JPEG(.jpg or .jpeg) – Joint Photographic Experts Group
PNG – Portable Network Graphic

Sound File Format:-
Words from the author: "I always thought full form of MP3 is "Music Player 3" but is isnt :)"
MP3 - MPEG Audio Layer 3

Video File Formats:-
3GP - Third Generation Partnership Project(3GPP)
MPEG - Moving Picture Experts Group
AVI - Audio Video Interleave
WMV – Windows Media Video

What is the meaning of "P.S."

Words from the author: "For so many years I always thought that P.S. stands for "please see" but I was wrong :E"

This is what I found after googling
"P.S. stands for "postscript"[Press ctrl+A]. It means something added after a letter or other written communication. Like to add a detail.

For example

Dear Christmas,
Its been fun, the kids are learning, and thanks for everything. Its really pretty.
p.s. its really cold, you'll like it."

What is the full form of LCD?

People generally use the word LCD as in LCD TV and LCD's are used in video players, gaming devices, clocks, watches, calculators, and telephones.
But people normally dont know the full form of it. :P
The full form of LCD is Liquid Crystal Display
[Press ctrl+A to view the answer]