1 / 13

The Internet

The Internet. Chrissy. Joey. Adam. Kati. The Rockets. Lesson 1 The World Wide Web. Before the web was created the internet was just used for scientific reports and government documents 1989 Tim Berners-Lee created HTML (Hypertext Markup Language) No more reading text from beginning to end

remy
Download Presentation

The Internet

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Internet Chrissy Joey Adam Kati The Rockets

  2. Lesson 1The World Wide Web • Before the web was created the internet was just used for scientific reports and government documents • 1989 Tim Berners-Lee created HTML (Hypertext Markup Language) • No more reading text from beginning to end • We can now click on links have videos and sound

  3. Lesson 2What is a URL? • Uniform Resource Locator • We all have an address at our homes • A URL is the address to go to a certain website • The only problem…………………….

  4. Lesson 3: How Information Travels on the Internet • When you connect to a Web there isn't a fixed connection between your computer and the Web site. • Instead, information is exchanged using the best possible path at that particular time. • Special computers called routers determine these paths, avoiding slow links and favoring fast ones.

  5. Lesson 3: How Information Travels on the Internet Click below for Demonstration

  6. Lesson 4:Breaking Messages Into Packets • A page on the Internet—whether it's full of words, images or both—doesn't come to you in one shipment. • It's translated into digital information, chopped into pieces called packets, and sent to you like a puzzle that needs to be reassembled. • Web pages are broken down this way because small pieces can travel faster and make the most efficient use of the Internet's resources. • Once all the packets are reassembled, the complete page appears on your computer screen. • Crowded Highway Video

  7. Lesson 4:Breaking Messages Into Packets Click Below for Activity!

  8. Lesson 5:In Bandwidth, Bigger Is Better Bandwidth is the amount of data that can pass through a particular connection in a set amount of time. The greater the bandwidth of the connection, the faster a Web page builds on your screen.

  9. Lesson 6:How Connection Speeds Are Measured Today's connection speeds to the Internet are measured in Kbps (kilobits per second) and Mbps (megabits per second). 1,024 bps = 1 Kbps 1,048,576 bps = 1 Mbps That means a 56 Kbps connection under ideal conditions can transfer 57,344 bps (56 x 1,024 bps) from the Internet to your computer. In reality, most 56 Kbps connections transfer around 48,000 bps.

  10. Lesson 7: Information on the Internet • Anyone can put information on the Internet • The information can be reliable and true, but it also can be poor and inconsistent. • Therefore, we must be careful when judging the quality and validity of the content.

  11. Search Engines • Be careful with search engines • Search engines are not ranked by quality of the website. • The search engines rank responses based on the frequency of keywords appearing on the web page. • They can also rank based on the frequency a web page is visited • Most search engines have access to less than one percent of web content.

  12. Lesson 8:Connecting Wirelessly • Wireless cards can be built in computers or plugged into one of the slots in the machines. • These wireless cards allows for Internet access from anywhere from 30 feet to 30 miles from the access point. • WiFi (or Wireless Fidelity) transmits wireless data through radio waves • WiFi will not only connect to the Internet, but also other wireless networks

  13. How WiFi works: • A wireless adaptor translates data into a radio signal and transmits it using an antenna. • Router receives the signal and decodes it • The information is then sent to the Internet using a wired connection (Ethernet) (The process also goes backwards)

More Related