b.in basically the same way
c.numerous types of memory
d.a specific function and purpose.
g.the same function
h.the flow of data
i.the greatest performance
j.new or updated data files
2. What input device would you use for these tasks?
1.to play computer games
2.to copy images from paper into a computer
3.to read price in a shop
4.to select text and click on links on web pages
5.to enter drawings and sketches into a computer
6.to input voice commands and dictate text
7.to draw pictures or select menu options directly on the screen
8.to take and store pictures and then download them to a computer
3. Complete each sentence by choosing from the following devices: memory stick, hard disk, CDs, DVDs, touch screen, trackball, touchpad, webcam.
1.A . is a stationary device that works like a mouse turned upside down. You roll the ball with your hand to move the pointer on the screen.
2.A . is a small device that is extremely reliable and fits in the USB port on your computer. It quickly replaced the floppy disk.
3.Interactive . are used in museums, information centres and Internet kiosks. You use your fingers to point directly to objects on the screen.
4.Its function is to store all the files, and software the computer will ever use. Any file or software program used by RAM most likely will come from the ..
5. . can only hold up to approximately 650 MB of information. You have to have a special drive to write to them. Otherwise they can only be read from.
6.A . is used to send live video via the Internet.
7.A . is found on notebook PCs. You use it by pressing the sensitive pad with a finger.
8.CDs and . use light (laser) to write and read data on a disk. These long and short pits are then stored or etched on the surface of the disk. They can only be read by laser technology.
Use the words in the box to complete these sentences.
input processing storage output ROM RAM CPU software
1.Computer . is the visible or audible result of data processing information that can be read, printed or heard by the user.
2. . is a set of instructions, called a program, which tells a computer what to do.
3.The . is the heart of the computer, a microprocessor chip which processes data and coordinates the activities of all the other units.
4.As a scanner, the Sigma-100 can be used to . photographs as well as documents into the computer.
5.The amount of . determines the number of programs you can run simultaneously and how fast they operate.
6.The CPU will process data as instructed by the programs youre running. . includes functions like calculating, sorting, editing, drawing and searching.
7.DVDs are expected to replace CDs as . devices.
8. . is permanent and contains instructions needed by CPU. The BIOS uses it to control communication with peripherals.
Create a crossword puzzle for 20 of the computer terms found in this article.
The Internet: Whats all fuss?
Who uses it?
In fact, if you have not heard or browsed the Internet, it is not the fault of the Internet. It just isn't that complicated or isolated. Furthermore, anyone with a computer, phone line, modem, and an ISP can connect and even publish on the Internet. However to publish you will have to get to know some Basic Terms such as HTML, HTTP, URL, and others. From young to old, millions of companies, organization, and individuals have published with great success.
Just look around. Everything has gone www.com crazy. The Internet has its complex side. It is a well thought out network with lots of technical languages and protocols that make it work. But that complexity has simply made it easier for the average person to use. From doctors, lawyers, professors, scientist to hobbyist, housewives and elementary students all have found something of value on the Internet.
The Internet's speed, vast resources, and its ability to directly communicate with others are its greatest benefits. Because the Internet uses the quickness of computers to transmit its data, information can travel at tremendous speeds. Speed is not the only benefit. The Internet uses hundreds of thousands of computers all connected to each other to store vast amounts of information. And finally, because the Internet allows for individuals to have specific electronic mail addresses, people can easily communicate with one another.
The Internet is considered by many to be superior to the best and biggest libraries in the county. This superiority exists primarily due to the thousands of organizations, companies and individuals publishing on the Internet. With such ease of publishing and the wide variety of publishers, there is almost no subject left off the Internet. The Internet's ability to deliver this vast amount of information has drawn even more users. Not having to wait for a book, newspaper, or magazine publisher to review and send an author's manuscript to a printing press to be bound or printed eliminates the time it would normally take to publish something. Instead of reading a medical breakthrough in next month's journal, it can be published on the Internet instantly. A breaking news event can be published almost immediately after the event occurs. People don't have to wait until the morning paper to read about an event. This part of the Internet alone has helped make the Internet a technological breakthrough.
Even finding not so current information can be a breeze using the Internet. Driving to a library and searching for possibly hours just to find some specific information is a task many of us have experienced. With the Internet you can sit in the convenience of your home and search (surf) to find information faster than going to a library.
Theoretically, the information on the Internet can travel at the speed of light (186,000 miles/sec.). Realistically, we know that this speed is nearly impossible due mainly to the large number of people using the Internet, and the limitation of the phone system. However the Internet's speed is much faster than traditional means of gathering news and reporting information.
Communication is a huge benefit of the Internet. Many people use the Internet to simple send messages and nothing else. Whether it is by news groups, chat rooms, or the most popular method E-mail, communicating over the Internet has developed vast appeal and usage. Billions of people around the globe use E-mail to communicate every day. They all place great value on the convenience of sending and receiving E-mail. E-mail can be sent and retrieved by its recipient almost instantly. The message never has to be printed or physically mailed to get to its destination. Furthermore, the cost is considerably less than a postage stamp and is delivered a lot faster.
With the invention of the Internet phone, some people can now even talk across the Internet just like on a voice phone but without paying long distance charges. It is just a fact; the time it takes to send a letter or reply to a phone message is no match for E-mail's speed and convenience.
How did the Internet begin?
The Internet's history is not very complicated nor that long. It may surprise you to know that the Internet began in 1968 as an experiment of the U.S. Defense Department. In fact, it was not originally designed for the public's personal use. The original goal of the Internet was to establish a system to safeguard the exchange of information among different government agencies in the event of war. With no one computer or person controlling the Internet, the enemy could not destroy our means of communication with just one military strike. Today this unique feature of the Internet remains constant and part of its success. No one person or organization controls or heads the Internet. It is basically hosted by thousands of individual computers that have registered with the NSF (National Science Foundation) for an Internet address.
In 1991 there were only 100 host computers or sites. Today this number is in the billions and is constantly growing. The Internet has certainly seen tremendous growth in just the past few years.
What really caused the Internet's tremendous growth spurt was the invention of something that made the Internet both easy to use and easy to transmit multimedia (graphics, sound, and video). The invention was a software product now known as a browser. In 1991 in an European physics lab, an invention was made that enabled words in a sentence to be clicked on and an action then performed. This invention today is known as hypertext. Hypertext is when words or pictures are clicked on that takes the place of typing commands into the computer. This single feature made the Internet easier to use. With this invention came new users from small kids to senior adults who felt comfortable riding the information super highway. This has forever changed the way average people use the Internet. Today we find people reading magazines, buying products, listening to radio stations, talking to friends, writing messages, playing games, even watching video all through the use of the Internet.