Computer/internet Awareness

                                                     Computer Awareness 

class -1

1. The default  extension name of Note pad is....................

   i) doc    ii) txt    iii) xls

2. ...................is software for drawing and painting.

3.Computers are used in .............. for ticket booking.

4...................tool is used to draw circle.

5................ is a primary memory.

6............... is the first calculating machine devloped in china.

7. The............... option is used to create duplicate.

8 ............... option is use to open a document.

9 MS Window is an ......................

10. .................. is dustbin in your computer .

11 ................. transform from one interface to another .

12 ................is word processing software .

13 computer can do different tasks is known as..................

14. ............... is the first super computer in india/.

15................ produce audio output .

16.................. is used to save a document.

17 Computers do not make mistake is known as................

18.............Display at the top of the window .

19.............. tool is used to erase drawing and painting .

20............... is a pointing device .

21 .............. is the shortcut key to copy a file

22.............tool is used to fill color from a part of a picture.

23........... short cut key is used to past a file .

24............is an example of gadgets .

25 status bar appear in ................. of window

26.............. is the most popular operating system.

27................. tool is used to color in an object .

28. Write the full form of RAM and ROM .

29. Write the full form of VLSI and ULSI .

30. Write the full form of CD and DVD .

31.write the full form of BCR and MICR

32.What is the short cut key for save and Cut .

33.What is Maximize and Minimize button.

 

ANSWERS-

1.doc 2. MS-paint 3.Railway station 4.Oval tool 5. RAM 6. ABACUS 7.Copy 8. Ctrl+ o 9. Application Software 10. Recycle bin 11.Software 12. MS-word 13. Versatility 14. PARAM 15. Speaker 16. Ctrl+ s          17. Accuracy 18. Title bar 19. Eraser tool 20.Mouse 21. Ctrl+ C 22. Fill with color 23 . Ctrl +c 24. Clock 25. 25. Top 26. window 27. Fill with color 28. Random Aces Memory, Read only memory 29.Very Large Scale Integration ,Ultra Large Scale Integration 30- compact Disc, Digital Versatile Disc 31-barcode Reader, Magnetic ink Character recognization 32. Ctrl+ S , Ctrl+ x 33. 33 . Do yourself 

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World Geography Knowledge

Universe

The study of universe is known as Cosmology .

The universe is commonly Defined As the totality of everything that exists including all physical matter and energy, the planet, star, galaxy, and the contents of intergalatic space.

Galaxy A galaxy is a vast system of billion of stars, dust and light gases bound by their own gravity. There are hundred billion galaxies in the universe and each galaxy has, on average, !00 billion stars.

Our galaxy is Milk Way Galaxy formed after the Big Bang.

Andromeda is nearest galaxy to the milk way.

The Big Bang Theory Big Bang was an explosion of concentrated matter in the universe that occurred 15 billion year ago leading the formation of galaxies of star and other heavenly bodies.

 Major Rivers Of The World

River	Origin
Nile	Victoria Lake
Amazon	Andes(Peru)
Yangtze	Tibetan kIang Plateu
Mississippi Missouri	Itaska Lake(usa)
Yenisei	Tannu-Ola Mountains
Huang ho	Kunlun Mountains
Ob	Altai Mountains
Congo	Lualaba and Luapula rivers
Amur	North East China
Lena	Baikal Mountain
Mekong	Tibetan Highlands
Niger	Guinea

Important Lakes Of The World

Lakes	Location
Caspian sea	Asia
Superior	Canada And USA
Victoria	Africa
Huron	Canada and USA
Michigan	USA
Tanganyika	Africa
Baikal	Russia
Great Beer	Canada
Aral	Kazakshtan
Great Slave	Canada

Great Desert Of The World

Name	Country/Location
Sahara	North Africa
Australian(Gibson, Simpson), Victorian Great Sandy	Australia
Arabian (Rub Al Khali)	Arabia
Dasht-E-Lut (Barren Desert)	Iran
Dasht-e-Kavir (Salt Desert)	Iran
Deserto de Sechura	Peru
Atacama	North Chile
Patagonia	Argentina
Kalahari	Botswana
Namib	Namibia

What is the external structure of the earth ?

 External structure of the Earth 

It has been known for more than 2000 years that the earth is round,But we were able to actually see this much later only when we flew into space.

The knowledge why we don't fall from the earth is much more recent.A journey as described by author jules verne in his book journey to the centre of the earth was,after all,impossible.Only one thing was known : The earth is made up of soil,rocks and water.

Today we know that the earth is also surrounded by an air cover called atmosphere.

Internal structure of the earth 

Like an onion, the earth has several layers.The outer most layer, the earth crust has an average depth of about 40 km. As compared with the diameter of the earth, which is around 12,700km,the earth crust is very small. It is primarily made up of solid rocks, below the crust is the mantle consist of solid and molten rocks. Below the mantle is the core,made up of iron and nickel.The deeper one travels inside the earth,the hotter it is.

The temperature in the core is between 4000 5000°C.

Hardware

 What is hardware in computer ?

Computer performs some operations to solve problems.For this the various unit of a computer system must be perform and co-ordinate all operations.

Main unit of computer :

>A computer has 3 main  unit-

1-input unit,2-Processing unit,3- out put unit.These are the physical unit of computer system.These unit constitute the hardware of computer.

>The comuter has its Own internal language.

>The computer is essentially made off electric components,All these components are capable of generating any one of the two states, either a low or a high.

-it is  difficult to talk always in term of currents and voltage to represent information there fore Computer scientist use a special convention,A high symbolically represented by a 1 and a low represented by a 0.

-The 1s and 0s are known as binary digit.or in short bits.

-Computer always work with bits.They do not understand any other form.

 

-Computer scientist use combination of 8 bits taken together to represent various symbols.

-The earliest computers ware designed so that there components could work with 8 bits at a time.

-The power of two closest to a kilo(1000)is 2 to the power 10 =1024

Image of hardwares

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Some important facts related to Computer

Fact about computer

Fact related to Computer :

-December 2 is obsessed as Computer literacy day.

-India has announced new computer policy in 1984.

-First computer (made in india is) is siddharth

-First computer in india was installed in the main post office of Bangalore on August 16,1986

-First pollution free computerized petrol pump of india is in Mumbai

-First computer University (in private sector)in india is Rajiv Gandhi computer University.

-Bengaluru is also known as silicon valley of india

-First indian news paper to be available on the internet is "The Hindu".

-First magazine to be available on internet is "india Today"

-First indian political party which has created its website on internet is BJP.

-Mainly there are three types of computer---Digital,analog and hybrid.

Super computer:

-First super computer of world is CRAY K-1-S

Devloped by Cray k company of U.S.A.

 

-Deep blue is a super computer which had defeated World chss champion garry kasparov.

This super computer is able to do the work equivalent to the work of 32 computers and can think 20 crore step of chess in 1 second. 

Types of computer

Types of Computer: according to size and capacity these are following types of computer----

1.Micro computer-

These computer are used by individuals,thus also called PC or personal computer.These Days PC are largely used for domestic and office and also in every important works.

2.Mini computer-

This type of computer is comparatively larger than that of micro computer.These are 5 to 50 times more powerful than that of a Microcomputer and work ⏩ fast.

3.Main frame Computer-

These are large sized computers.By multi sharing and multi tasking techniques many

People rather more than 100 people work at a time on different terminals of this computer.

4.Super computer-

These are very powerful computers and have more storage capacity. These are the most expensive and the fastest computer able to process most complex jobs with a very high speed.

5.Quantum Computer-

The development of this type is in final stage.probably Quantum computers will be more advanced and powerful than that of human brain.in quantum computer 🖥️ Q-bit will be used in lieu of Binary Bits.

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