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About Netbook

Diposting oleh Admin Kamis, 23 April 2009 0 komentar

Netbook laptop is a very small size, light weight, and energy efficient. Netbook is usually used for Internet services such as web browsing, email, and IM (Instant Messaging). Netbook is suitable for the use of Office and educational software, although the netbook does not have a composition that is higher than even these PC subnotebook.

Netbook concept comes from the subnotebook, which was introduced by Psion in 1999, and re-introduced by Intel in the first quarter in 2008, certainly after the launch of the Association OLPC laptop (Lapop One Per Child). Form netbook is smaller than notebooks, and more lightweight. There is a weight 2 to 3lbs or about 1kg.

Features that are usually in the netbook diagonal screen size is small, usually around 7 inch to 10 inch, wireless connection, but do not have the optical disc drive, keyboard and a smaller size is usually 80 to 95 percent of normal size. In addition, the netbook is also usually use SSD (Solid State Drives) than traditional hard disk.

Netbook on the operating system generally has a pre-installed, both versions of GNU or Linux or Windows XP Home Edition. Netbook able to run full applications for office, even though this user is now more often put the applications and services directly on the Internet, or with the so-called cloud computing, because it only requires a bit of hardware.

About ISP (Internet Service Provider)

Diposting oleh Admin Jumat, 27 Maret 2009 0 komentar

ISP is an acronym of Internet Service Provider. You need to have an ISP to connect to the Internet. When choosing Internet service provider, then you must take into account the needs, equipment, and budget, especially regarding the payment per month for Internet services. ISP present at the beginning of 1960. United States Defense Department, or more precisely the company Advanced Research Projects Agency (ARPA) has established the first Internet, that is, the ARPAnet in 1966.

The first time, the network has several Internet ARPAnet node at the University of California at Los Angeles and Stanford University. In 1989, Tim Berners-Lee is the first time showing the World Wide Web. He wrote the first web server, as a program that can be used as a web browser and an editor. Internet is a global computer network, while the World Wide Web (WWW) using HTTP (hypertext transfer protocol) as a method to share information on the Internet. WWW is the other method with SMTP (Simple Mail Transfer Protocol), FTP (File Transfer Protocol) and Internet Relay Chat (IRC). While examples of the first Internet service provider CompuServe is and PSINet.

Type
There are four basic types of Internet services. Dial-up, ISDN (Integrated Services Digital Network), Digital Subscriber line (DSL) and cable. Mode Dial-up service is the most with the slow download speed limitation of 56Kbps (Kilobit per second). While ISDN offers speed 64Kbps, DSL service is the next fastest with a speed of 128Kbps download. For cable tinngi have more speed to 30Mbps over.

Unlike dial-up connections, DSL and cable connections more open over time and making it easily attacked by viruses and hackers, so that antivirus software should be fixed in the update routine. In addition, older computer with a slow processor and memory capacity of a little connection to the Internet faster, it will make the connection slower.

Benefits
DSL connection has the same price or less than dial-up. You can also use the phone and surf the web in the DSL at the same time, while in the dial-up, you had to disconnect Internet-akan when using the phone. If you download or upload large files, or watch streaming video or spend a long time to surf the web, then the DSL connection is not enough to do so. Therefore, the need to use a connection via cable to increase speed.

IC (integrated circuit)

Diposting oleh Admin Senin, 16 Maret 2009 0 komentar


IC (integrated circuit) is the other name of chip. IC electronic tools are made from semiconductor material. IC chip or an embryo of a computer and all types of devices that use a technology other micro-controller.

IC found in 1958 by an engineer named Jack Kilby, who works at Texas Intruments try to solve the problem with thinking about a concept combining all the electronics components in a block that is made from semiconductor materials. The findings are then called IC (Integrated Circuit) or commonly called a chip and then. Some time after that, Robert Noyce, who worked on the Fairchild Semiconductor Corporation, to find similar things, although they are working on two different places.

Since then a lot of research conducted to develop IC (integrated circuit) or Chip to the present.

A founder of Intel, Moore curtain, in 1965 estimates that there are a number of transistor in an IC will be 2 times every 18 months. Trend of increased number of transistor after this has been so long and will continue to be estimated.

This can be seen in the development of the IC, a 64-Mbit DRAM is the first time in the market in 1994, consists of 3 million transistor. Microprocessor and the Intel Pentium 4 comprises more than 42 million transistor, and there are approximately 281 IC therein. Even based on the International Technology Roadmap for Semiconductor (ITRS), is expected to be available a chip consisting of a transistor 3 billion in the year 2008.

IC used to own a variety of tools, including television, mobile phone, computer, industrial machinery, and various audio and video equipment. IC is often grouped based on the number of transistor held:

  • SSI (small-scale integration) chips with a maximum of 100 electronic components.
  • MSI (medium-scale integration) chips with 100 to 3,000 electronic components.
  • LSI (large-scale integration) chip with the 3000 to 100,000 electronic components.
  • VLSI (very large-scale integration) chips with 100,000 to 1,000,000 electronic components.
  • ULSI (ultra large-scale integration) chips with more than 1 million electronic components.