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Selasa, 04 Agustus 2009

computer and internet


Literally, the internet (of interconnected short-networking) is a series of computers that are connected in some series. When the Internet (the letter 'I' big) is the common computer system, the global interconnect and using TCP / IP protocol as the exchange of packets (packet switching communication protocol). The biggest series of the Internet called the Internet. How to connect with kaedah series is called internetworking.

Occurrence of the Internet

Series that make up the center on the Internet beginning in 1969 as ARPANET, which was built by ARPA (United States Department of Defense Advanced Research Projects Agency). Some initial investigation disumbang the ARPANET by kaedah including a series of non-central (decentralised network), queueing theory, and the exchange kaedah packet (packet switching).

On 1 January 1983, a series of ARPANET protocol switching center, from the NCP to TCP / IP. This is the beginning of the Internet we know today.

At around 1990s, the Internet has grown and the most user-network is the computer networ.


nternet at
Graphical representation of the WWW network (only 0.0001% only)

Internet guarded by agreement or bi-and multilateral technical specification (the protocol that makes the transfer of data between series). Protocols were formed based on the discussion Internet Engineering Task Force (IETF), which is open to the public. This body issued a document known as RFC (Request for Comments). Some of the Internet Standard RFC made (Internet Standard), by the Internet Architecture Board (Internet Architecture Board - IAB). Protocols that are often used such as, IP, TCP, UDP, DNS, PPP, Slip, ICMP, POP3, IMAP, SMTP, HTTP, HTTPS, SSH, Telnet, FTP, LDAP, and SSL.

Some of the popular services on the Internet using the protocol above, is to email / electronic mail, Usenet, Newsgroups, communion file (File Sharing), WWW (World Wide Web), Gopher, session access (Session Access), WAIS, finger, IRC, MUD, and MUSH. In between all this, email / electronic mail and World Wide Web is used more often, and more services are built berdasarkannya, such as mailing lists (Mailing List) and Weblog. Internet service allows the current (real-time service), such as web radio, and webcast, which can be accessed around the world. In addition, through the internet for possible berkonikasi directly between two or more users through an instant messaging program like Camfrog, Pidgin (Gaim), Trilian, Kopete, Yahoo! Messenger, MSN Messenger and Windows Live Messenger.

Some of the popular Internet service is based on the system status (?) (Proprietary System), is such as IRC, ICQ, AIM, CDDB, and Gnutella.

Internet access

Countries with the best internet access, including South Korea (50% of the population have access jalurlebar - Broadband), and Sweden. There are two forms of public Internet access, the dial-up, and jalurlebar. In Indonesia, such as developing countries where Internet access and PC penetration are also rendahlainnya around 42% of Internet access through the Public Internet access facilities such as cafe, cybercafe, etc. hotspot. Other public places that are frequently used for Internet access on campus and is dikantor.

Besides using a PC (Personal Computer), we can also access the Internet via Handphone (HP) use the facility which is called GPRS (General Packet Radio Service). GPRS is a wireless communication standard (wireless) that has a 115 kbps connection speed and supports a broader application (graphics and multimedia). GPRS technology can be accessed to support the facility. Pen-an-GPRS settings on the phone Depending on the operator (Telkomsel, Indosat, XL, 3) is used. Internet access cost is calculated by the amount of capacity (per-kilobite) the downloaded.


Internet figures

* Timothy Lee Barners creator WWW (World Wide Web)
Roy Tomlinson creator * @ (at) on the e-mail address

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