History+of+Computers+Part+2

About 60 yeas ago a computer called the ENIAC was built in the United States. The computer was more than 80 feet long and weighed 30 tons. In two hours the ENIAC could do as much as 100 scientists could do in a year.

About 45 years ago factories and other very large businesses began to use computers. Computers helped keep track of how many hours people worked and how much the business sold. About 35 years ago the Internet was born. For many years only a few government and university computers were part of the Internet. About 25 years ago personal computers were inveted. These were small, desktop-sized machines. They were much less expensive than othe computers. Many people in offices, schools, and homes began to use computers.

About 20 years ago the computer mouse was introduced. The mouse made personal computers easier to use.



About 15 years ago the Internet changed when links were added to Internet sites. Links let users jump from one site to another with a click. This system of linked sites became known as the World Wide Web.

[]

About 15 years ago multimedia computers with CD-ROM drives began to sell in large numbers. CD-ROMs hold thousands of times more information than floppy disks. This means that they have more room for graphics, video, and sound.

Now, look at our personal computers…Ipad...