Internet originated from the creation of computer network technology around 1960. What exactly is a computer network? Computer networks are some of the computers connected to each other by means of cable in one location, for example, in one office or building. This computer network to function so that computer users can exchange information and data with other computer users.
At the beginning of creation, the computer network used by American armed forces to develop nuclear weapons. Americans worried if his country is attacked then the communication becomes paralyzed. That's what they tried to communication and exchange of information through computer networks.
After the U.S. armed forces, the education also felt very necessary to learn and develop computer networks. One of them is the University of California at Los Angeles (UCLA). Finally in 1970 the Internet is widely used in universities and universities in America and is growing rapidly today. In order for computer users with different brands and types can be interconnected, then the experts make a protocol (like language) the same for use on the internet. His name is TCP (Transmission Control Protocol, Transmission Control Protocol Indonesian language) and IP (Internet Protocol).
Internet today
In 1989, Timothy Berners-Lee, a computer expert from the British created the World Wide Web is a kind of program that allows voice, images, movies, music featured in the internet. Since the discovery of the Internet is becoming more attractive appearance and very varied. Formerly the Internet can only be used by certain circles and certain components only. But now people who are at home can connect to the internet using a modem and telephone networks. In addition, the Internet is widely used by corporations, educational institutions, government agencies, military agencies around the world to provide information to the public.
In addition to the above benefits, the Internet also have negative effects because of too much free information available on the internet. Thus enabling the children to see things that do not deserve to be seen or read.
How to access to the internet
When at home we do not have a computer connected to the internet, we can take advantage of the cafe (internet cafes) or maybe in school computer labs are already connected to the Internet to find information. To find information or data you can click / tap shortcut / images if you use Internet Explorer browser. Then the contents of the destination site address in the Address. To find information quickly, use the search sites such as yahoo.com, google.com, e-smartschool.com or the other. After entering the search site, enter your keyword (keywords) are sought.
Use of the Internet today has penetrated into many lives, both in the social, cultural, economic, health, politics, and education. Internet is needed in the exchange of information and communicate quickly with no limit to the territory, space and time. With the internet all the work becomes very easy and very efficient with time. Internet can also be used to broaden knowledge and expand our relationships as social beings.
Proper use of the Internet will be very beneficial to the progress of thought and civilization for the people who always want a change in a positive direction. Internet is part of the information and communication technology has always been progressing very rapidly in line with technological advances.
Understanding the InternetInternet is an abbreviation of the Interconnected Network. If translated directly means interconnected networks. The Internet is a combined network of computers around the world who form a global information network system.All computers are connected to the Internet can access all the information contained on the Internet for free. The Internet can be used as a means of exchanging information from one computer to another without being limited by physical distance the second computer. Internet a very important role is as a source of data and information as well as a means of exchanging data and information.
Internet HistoryDevelopment of the Internet begins with the construction of ARPANet network in 1969. ARPA (Advanced Research Project Agency) is a network developed by AMFITIL by the U.S. Department of Defense whose job it is to do research on computer networks with packet switching technology. The network originally had only a few computers at several universities in the United States, such as the University of California-Los Angeles and the Stanford Research Institute. At the beginning of its development, the network is only used specifically for academic and military circles. The term Internet itself emerged around 1983 with the discovery protocol TCP / IP (Transmission Control Protocol / Intenet Protocol) which contributed greatly to the development of the network was able to unify multiple systems and different networks. More complete history can be searched on the internet http://id.wikipedia.org/wiki/Sejarah_internet
Internet ApplicationsApplications on the intenet is currently very much and will continue to berkambang along with advances in information technology and the diverse needs in various fields. Internet applications are often used between lainWord Wide Web (www), e-mail, mailing lists (mailing lists), Newsgroups, Internet Relay Chat, File Transfer Protocol (FTP), Telnet, Gopher, VoIP (Voice over Internet Protocol) and other another.
Negative Impact of InternetUse of the Internet is now pervasive in almost all aspects of life. Internet is very beneficial for all parties because it provides information up to date at all times. Besides the internet has many benefits, the Internet also have a negative impact if not used properly. The negative impact of internet usage over its development, among others
The threat of virus
Carding or theft of credit card numbers
Cracking activity
Piracy of intellectual work
Deployment of sites that do not correspond to moral (pornography)
To overcome the negative effects of using the Internet, the need for special supervision and clear rules about Internet usage, especially among education.
Intranet DefinitionIntranet is a network of information intenal a company or organization that works in the same principle with the Internet. Intranet can be interpreted as a form of private from the Internet or Internet use is limited to an organization / company. Intranet access requires a user identification and password so only accessible by members of the organization or company employee. Intranets are typically used to share calendar / schedule of activities, documents, and internal discussions are closed, so it can not be accessed by outsiders. Technology and Internet concepts such as client-server and Internet protocols like HTTP and FTP is also used to build an intranet.
The advantage of using an intranet for an organization or company, among others:
Labor productivity
Time efficiency
Communication
Web publishing system
Cost effectiveness
Uniformity of information
Increase cooperation
Intranet also has several weaknesses, among others
Information is wrong or inappropriate, thereby reducing its effectiveness
Interaction on the intranet that may be responsible
Need special training to members in using the intranet
Need experts to build and develop an intranet in an organization or company
Overload can 'just happen' (full data) due to delivery of messages between users who do not terkontril well.
CONNECTING TO COMPUTER NETWORK WITH INTERNET
1. Through the Network
To connect a computer with a large network can use a smaller network that is LAN.cara computer with internet connection through the network is used to serve the user with a number of banyak.contoh cafe, campus, school, public and private companies and other-lai.
Liaison with the network system is to use a computer as a server connected to the Internet provider either by telephone or non kabel.Sistem cable network has the advantage that the access charges incurred will be cheaper, because the cost of access will be divided by the number of users.
2. Through a direct phone line
Another connection system is to dial up directly, in which the modem is directly connected to the telephone network that connects to the Internet network. The advantages of this access is to have a network that luas.sedangkan drawback is the relatively high access costs.
3. Via GPRS
GPRS stands for General Pocket Radio is a radio wave Service.Jaringan as a liaison with the Computer internet.dengan network using radio waves as a liaison with the computer network using radio waves then internet.dengan access with GPRS has the advantage of access can be executed even though the means of communication or bergerak.dalam user access based costing much data is accessible without being limited amount of time akses.dan to be able to access via GPRS is only do computers and cell phones are equipped with facilities GPRS.Kekurangan of GPRS is to get an internet connection, we must pass certain settings on the phone, but every brand mobile phones and mobile operators have the distinct ways to activate GPRS.
4. Via WiFi (Wireless Fidelty)
WiFi is a wireless network that mengunkan waves with high frequency (2.4GHz). To use the WiFi we must have a notebook and PDA equipped with WiFi cards WiFi.Kelebihan is high exists at the speed of access is 11Mbps.Sedangkan lack of WiFi is the use must located in areas that have WiFi signal (Local Hot Spot)
5. Using Cable TV
The advantages of using cable TV networks for Internet access are that you can access the internet at any time without any interruption telephone network fully
Terms aksess Internet through cable TV, among others:
a. Subscribe to cable TV providers who have internet service
b. The device is equipped with a standard computer operating systems and other software that supports Internet access.
c. Using a special modem that is designed for cable TV.
