CD ROOM does not work How to Solve?

CD ROOM does not work

Potential cause:

1.Improper Jumper Setting.

2.Dirty lens of CD room drive.

3.Driver softer is not installed properly.

4.improper cable connection between hard disk & CD room .

5.Power cable connection is not properly.

7.CD Room drive is defective.

Potential Solution:

1.Set the jumper setting properly (See on the front panel of CD room casing.

2.Cline the CD room drive by head cleaner.

3.install the CD room drive softer.

4.connect power cable properly.

5.Change the other CD room drive.

CD is not reading properly

Potential cause:

1.CD may be scratched .

2.Lens of drive may be dirty.

3.Speed is CD room drive too low.

4.CD room drive may be defective.

Potential Solution:

1.Use new CD.

2.clean the CD room's lens.

3.Used high-speed drive such as 25x.

4.Change the fine CD drive.

HOW TO KEEP YOUR COMPUTER HEALTHY

Disk Cleanup

Disk cleanup helps free up space on your heard drive.Disk cleanup searches your drive,and then shows your temporary files, internet files, and unnecessary program files that you can safely delete. you can direct Disk cealnup to delete some or all of those files.

1.Click on start butten.

2.choose program.

3.choose accessories.

4.Choose system tools.

5.Choose Disk Cleanup and click on it.

Then Disk Cleanup dialog box appears.

Disk Defragmenter

Disk Defragmenter

Disk Defragmenter rearranges files, program,and unsed space on youp computer Hard diskso that programs run faster and files open move quickly. Disk Defragmenterdoes not affect anything that you see on the screen, such as files in my documents or shortcuts on the programs menu.

1.Click on strate botton.

2.Choose program.

3.choose Accwssories.

4.choose system tools.

5.click on Disk Defragmentation.

Then, the following dialog box appears.
6.Select the required drive (D: or c:).

7.Clickon Analyze/Defragmenter.

Cleaning Up Temporary Files/ Folders

Cleaning Up Temporary Files/Folder:

Lost of Temporary files and folder will be made during the computeroperation automatically.It will be good practice to clen up these files frequently. To do so,

1.click on start.

2.click on run.

3.Type %temp%in the open box.

4.click on ok.

5.select all temporary contents using ctrl+A key.

6.click on ok, if the confirmation asked for hidden files.

7.Press Delete key from the keyboard.

8.click on yes for the confirmation.

History Of Computer

The history of computer starts 4000 years ago. History of computer means the gradual change in the concept over a long period of time. Around fifth century, Hindu philosophers developed a new method of counting from 0 to 9. Counting the numbers from 0to 9can be performed with the help of fingers. The development of counting started from the development simple counting device called ABACUS.

Abacus:

It is the early counting and calculating device that was developed by the chines people.The ABACUS was first used for computations in 3000B.C.

Napier's bones:

in 1614 A.D Scottish mathematician john mapiaer discovered the concept of logarithms. in1617A.D he constructed a set of rods called Napier bones fording mathematical calculation easily.

Analytical Engine Computer:
It was also developed by Charles Babbage in 1830s. it consisted of the input unit for taking data and instructions mill for performance calculation memory (punched card) with a suitable out put device that was used in vivaing the final result. It was designed to calculate up to 20 decimal places. the same principle of analytical engine is used in the modern computer. So he is called as the father of modern computer using the principles of Charles Babbage about 100 year's later mark-i was developed by ha ward Aiken in 1937.

Universal Accounting Computer:

john mauchly and eckert founded their won in 1946 and began to work on the universal automatic computer (UNI VAC):general-purpose commercally computer in 1951. It was the first commercially used electronic computer in the world.

- In 1977 steve wozniak and Steve jobs establish the company apple computers .

-in 1984 apple introduces the Macintosh the first widely available computer with "user-friendly graphical interface using icons windows and a mouse device.

-In1989 Microsoft corporation introduces windows for IBM computers.

Disadvantage of Computer

If there are various advantages of computers then there are disadvantages as well. The major impact of computer technology is on teenagers. Their life standards have changed dramatically because of the technology. They spend more time on Internet and give less time to their families. Computers have made them lazy and they want to play computer games instead of playing some physical games. Computer has also increased the plagiarism because every information is accessible over the Internet. Computers have also created the issue of the adulthood. The reason is the access of immature children to the pornography material. Internet technology is becoming very important in all fields of life and computer is contributing in this. As a result the Cyb crimes have increased. There are a number of disadvantages of computers which are directly linked with Internet but above mentioned are the disadvantages of computers only.

Other Used Of Computer

Business:
The used of computer in office improve their working efficiency. Record keeping becomes very easy. Information can be searched immediately.
Education:
computers are playing an important role in education. Once can get lesson on certain topics, special lectures prepared by experts etc on the screen as many times as he wants until he understands the topic.
Communication:
computers are capable of manipulating and transmitting texts at very fast rate. sitting at home, anybody may do office work, bank transaction's, marketing, purchase of shares, reservation of place and bus tickets and so on. Officers and managers can contract any branch office anywhere in the world through the computer network. Text,voice,data and picture can easily be transmitted nowadays using modern communication system,which heavily depend upon computers.
Using a computer, one can remain connected to the world through Internet. Internet is a network of computers that communicates via the Internet Protocol Suite (TCP/IP). The World Wide Web (WWW) or simply web is a huge resource of information that can be accessed via the Internet. To mention a few of the resources, there are electronic mail (e-mail), file transferring and sharing, online chat and gaming. The Internet allows people from around the world to share knowledge, ideas and experiences in any field.

Used Of Computer

USED OF COMPUTER

Word Processing software automatically corrects spelling and grammar mistakes. If the content of a document repeats you don’t have to type it each time. You can use the copy and paste features. You can printout documents and make several copies. It is easier to read a word-processed document than a handwritten one. You can add images to your document.It is a network of almost all the computers in the world. You can browse through much more information than you could do in a library. That is because computers can store enormous amounts of information. You also have very fast and convenient access to information. Through E-Mail you can communicate with a person sitting thousands of miles away in seconds. There is chat software that enables one to chat with another person on a real-time basis. Video conferencing tools are becoming readily available to the common man.Audio or video composition and editing have been made much easier by computers. It no longer costs thousands of dollars of equipment to compose music or make a film. Graphics engineers can use computers to generate short or full-length films or even to create three-dimensional models. Anybody owning a computer can now enter the field of media production. Special effects in science fiction and action movies are created using computers.With desktop publishing, you can create page layouts for entire books on your personal computer.You can diagnose diseases. You can learn the cures. Software is used in magnetic resonance imaging to examine the internal organs of the human body. Software is used for performing surgery. Computers are used to store patient data.Thanks to computers, which have computing speeds of over a million calculations per second we can perform the biggest of mathematical calculations.All financial transactions are done by computer software. They provide security, speed and convenience.One can book air tickets or railway tickets and make hotel reservations online.Telecommunications - Software is widely used here. Also all mobile phones have software embedded in them.There is software embedded in almost every weapon. Software is used for controlling the flight and targeting in ballistic missiles. Software is used to control access to atomic bombs.You can give online exams and get instant results. You can check your examination results online.Shops and supermarkets use software, which calculate the bills. Taxes can be calculated and paid online. Accounting is done using computers. One can predict future trends of business using artificial intelligence software. Software is used in major stock markets. One can do trading online. There are fully automated factories running on software.Different types of certificates can be generated. It is very easy to create and change layouts.The computer software authenticates the user and dispenses cash.There are many websites through which you can read the latest or old news.

Introduction

The term 'Computer' is derive from the Latin word 'Computare'this means to calculate.

Computer is an advanced electronic device, which takes raw data as input from the user and processes these data under the control of set of instructions (called program) and gives the result (output). it also save output for the future use. it can both numerical and non-numerical (arithmetic and logical) calculations. It consists of 2 parts-hardware and software. Computer ,one of the most powerful machine today, is being used everywhere . let's discuss the uses of computer on various sectors of our society.