Computer Network

What is a Computer Network 

      Computer Network is a computer network system. Which represents a connection between two or more computers together with cables. Or other Enable computers to transmit data to each other. Where there is a connection between multiple computers. Machine to a large central computer. We call that central host computer (Host) and a small computer connected to the client (Client / Terminal).

                                                    
      Network (Network) to link computers together to communicate. We can deliver information within Or across the city to the other side of the world. The information Can be either text, pictures, sounds, causing inconvenience. Easy to use This capability makes these computer networks are important. And the need to operate in different industry.
      There are three forms of network looks like.
1. LAN (Local Area Network)?, A group of computers connected together in a limited space. For example, within an office building, or in the factory. Cables are used to communicate.
2. MAN (Metropolitan Area Network)? Was bringing many LAN-LAN with adjacent areas are connected, to a larger size. Such interconnected in Or in the provinces,
3.WAN (Wide Area Network)?, A group of computers connected by a space. May be in the country or in the country to use a LAN or a MAN is in a different area? Connected together at the New York offices connected with the London communications. May use the telephone line, until the satellite.
     - There may be another type of SAN (Small Area Network)?, A group of computers connected together in a very small space. May be in the home or to the office with a small number of computers should not exceed 10.

                               

Google office

Google's office

       Google has been founded in California in January 1996 as a research project by Larry Page and Sergey Brin when they were both studying in graduate school at Stanford University. 15 years later, Google is one of the most recognizable brands in the world.The company manages more than one million servers in data centers (DC) around the world, and processes over one billion search requests and twenty-four petabytes of user data each day, bringing incredible profits to its owners. Part of this income is invested in creating the most comfortable and pleasant working environment, which each employee can only dream of.

                                                         Pictures in Google office

                        

                        

                        

                        

                        

Google X

                                                     
Google X, stylized as Google[x], is a semi-secret facility run by Google dedicated to making major technological advancements. It is located about a half mile from Google's corporate headquarters, the Googleplex, in Mountain View, California. Work at the lab is overseen by Sergey Brin, one of Google's co-founders, while scientist and entrepreneurAstro Teller directs day-to-day activities. Teller says that they aim to improve technologies by a factor of 10, and to develop "science fiction-sounding solutions." The lab began in 2010 with the development of a self-driving car.
                               
                                               

                                                

                                               

Google

Google is an American multinational corporation specializing in Internet-related services and products. These include online advertising technologies, search, cloud computing, and software. Most of its profits are derived from AdWords.

Google was founded by Larry Page and Sergey Brin while they werePh.D. students at Stanford University. Together they own about 14 percent of its shares but control 56 of the stockholder voting power through supervoting stock. They incorporated Google as a privately held company on September 4, 1998. An initial public offering followed on August 19, 2004. Its mission statement from the outset was "to organize the world's information and make it universally accessible and useful," and its unofficial slogan was "Don't be evil." In 2004, Google moved to headquarters in Mountain View, California, nicknamed the Googleplex.

                                               

Rapid growth since incorporation has triggered a chain of products,acquisitions and partnerships beyond Google's core search engine. It offers online productivity software including email (Gmail), a cloud storage service (Google Drive), an office suite (Google Docs) and asocial networking service (Google+). Desktop products include applications for web browsing, organizing and editing photos, andinstant messaging. The company leads the development of the Androidmobile operating system and the browser-only Chrome OS for anetbook known as a Chromebook. Google has moved increasingly into communications hardware: it partners with major electronics manufacturers in the production of its "high-quality low-cost"Nexus devices and acquired Motorola Mobility in May 2012. In 2012, a fiber-optic infrastructure was installed in Kansas City to facilitate aGoogle Fiber broadband service.

The corporation has been estimated to run more than one million servers in data centers around the world (as of 2007) and to process over one billion search requests and about 24 petabytes of user-generated data each day (as of 2009). In December 2013Alexa listed google.com as the most visited website in the world. Numerous Google sites in other languages figure in the top one hundred, as do several other Google-owned sites such as YouTube andBlogger. Its market dominance has led to prominent media coverage, including criticism of the company over issues such as copyright,censorship, and privacy.

Earthquake

     Earthquake

       An earthquake (also known as a quake, tremor or temblor) is the result of a sudden release of energy in the Earth's crust that createsseismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time.

Earthquakes are measured using observations from seismometers. Themoment magnitude is the most common scale on which earthquakes larger than approximately 5 are reported for the entire globe. The more numerous earthquakes smaller than magnitude 5 reported by national seismological observatories are measured mostly on the local magnitude scale, also referred to as the Richter scale. These two scales are numerically similar over their range of validity. Magnitude 3 or lower earthquakes are mostly almost imperceptible or weak and magnitude 7 and over potentially cause serious damage over larger areas, depending on their depth. The largest earthquakes in historic times have been of magnitude slightly over 9, although there is no limit to the possible magnitude. The most recent large earthquake of magnitude 9.0 or larger was a 9.0 magnitude earthquake in Japan in 2011 (as of March 2014), and it was the largest Japanese earthquake since records began. Intensity of shaking is measured on the modifiedMercalli scale. The shallower an earthquake, the more damage to structures it causes, all else being equal.

    At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacement of the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes can also trigger landslides, and occasionally volcanic activity.

In its most general sense, the word earthquake is used to describe any seismic event — whether natural or caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by other events such as volcanic activity, landslides, mine blasts, and nuclear tests. An earthquake's point of initial rupture is called its focus or hypocenter. The epicenter is the point at ground level directly above the hypocenter.

Tsunami

TSUNAMI

      A tsunami (plural: tsunamis or tsunami; from Japanese: 津波, lit. "harbour wave"; English pronunciation: /suːˈnɑːmi/ soo-nah-mee or/tsuːˈnɑːmi/ tsoo-nah-mee) , also known as a seismic sea wave, is a series of water waves caused by the displacement of a large volume of a body of water, generally an ocean or a large lake. Earthquakes,volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.

Tsunami waves do not resemble normal sea waves, because their wavelength is far longer. Rather than appearing as a breaking wave, a tsunami may instead initially resemble a rapidly rising tide, and for this reason they are often referred to as tidal waves. Tsunamis generally consist of a series of waves with periods ranging from minutes to hours, arriving in a so-called "wave train". Wave heights of tens of metres can be generated by large events. Although the impact of tsunamis is limited to coastal areas, their destructive power can be enormous and they can affect entire ocean basins; the 2004 Indian Ocean tsunami was among the deadliest natural disasters in human history with at least 290,000 people killed or missing in 14 countries bordering the Indian Ocean.

The Greek historian Thucydides suggested in his late-5th century BC History of the Peloponnesian War, that tsunamis were related to submarine earthquakes, but the understanding of a tsunami's nature remained slim until the 20th century and much remains unknown. Major areas of current research include trying to determine why some large earthquakes do not generate tsunamis while other smaller ones do; trying to accurately forecast the passage of tsunamis across the oceans; and also to forecast how tsunami waves would interact with specific shorelines.

Tsunamis are often referred to by the inaccurate and highly misleading term tidal wave, although the phenomenon is unrelated to the tides.

Computer

computer

     A computer is a general purpose device that can be programmedto carry out a set of arithmetic or logical operations automatically. Since a sequence of operations can be readily changed, the computer can solve more than one kind of problem.

Conventionally, a computer consists of at least one processing element, typically a central processing unit (CPU), and some form ofmemory. The processing element carries out arithmetic and logic operations, and a sequencing and control unit can change the order of operations in response to stored information. Peripheral devices allow information to be retrieved from an external source, and the result of operations saved and retrieved.

In World War II, mechanical analog computers were used for specialized military applications. During this time the first electronicdigital computers were developed. Originally they were the size of a large room, consuming as much power as several hundred modern personal computers (PCs).

Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space. Simple computers are small enough to fit into mobile devices, and mobile computers can be powered by small batteries. Personal computers in their various forms are icons of the Information Age and are what most people think of as “computers.” However, the embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are the most numerous.

Facebook

เฟซบุ๊ก (อังกฤษ: Facebook) เป็นบริการเครือข่ายสังคมและเว็บไซต์ เปิดใช้งานเมื่อ 4 กุมภาพันธ์ ค.ศ. 2004 ดำเนินงานและมีเจ้าของคือ บริษัท เฟซบุ๊ก (Facebook, Inc.)  จากข้อมูล 4 ตุลาคม 2555 เฟซบุ๊กมีผู้ใช้ประจำ พันล้านกว่าบัญชี หรือคิดเป็นอัตราส่วน 1 ใน 7 ของคนทั้งโลก  ผู้ใช้สามารถสร้างข้อมูลส่วนตัว เพิ่มรายชื่อผู้ใช้อื่นในฐานะเพื่อนและแลกเปลี่ยนข้อความ รวมถึงได้รับแจ้งโดยทันทีเมื่อพวกเขาปรับปรุงข้อมูลส่วนตัว นอกจากนั้นผู้ใช้ยังสามารถร่วมกลุ่มความสนใจส่วนตัว จัดระบบตาม สถานที่ทำงาน โรงเรียน มหาวิทยาลัย หรือ อื่น ๆ ชื่อของเฟซบุ๊กนั้นมาจากชื่อเรียกภาษาปากของสมุดที่ให้กับนักเรียนเมื่อเริ่มเแรกเรียนในสถาบันอุดมศึกษา ที่มอบให้โดยคณะบริหารมหาวิทยาลัยในสหรัฐอเมริกา เพื่อช่วยให้นักเรียนสามารถรู้จักผู้อื่นได้ดีมากขึ้น เฟซบุ๊กอนุญาตให้ใครก็ได้เข้าสมัครลงทะเบียนกับเฟซบุ๊ก โดยต้องมีอายุมากกว่า 13 ปีขึ้นไป

เฟซบุ๊กก่อตั้งขึ้นโดย มาร์ก ซักเคอร์เบิร์ก ร่วมกับเพื่อนร่วมห้องในวิทยาลัยของเขาและเป็นนักเรียนวิทยาศาสตร์คอมพิวเตอร์ที่ชื่อ เอ็ดวาร์โด ซาเวริน, ดิสติน มอสโควิตซ์ และคริส ฮิวส์ เดิมทีสมาชิกของเว็บไซต์จะจำกัดเฉพาะกลุ่มผู้ก่อตั้งและนักเรียนมหาวิทยาลัยฮาวาร์ด แต่ต่อมาขยับขยายไปสู่มหาวิทยาลัยอื่นในแถบบอสตัน, กลุ่มไอวีลีก, และมหาวิทยาลัยสแตนฟอร์ด แล้วค่อย ๆ เพิ่มนักเรียนจากมหาวิทยาลัยอื่น จนกระทั่งเปิดให้กับนักเรียนระดับไฮสคูล จนในที่สุดทุกคนก็สามารถเข้าสมัครได้โดยอายุมากกว่า 13 ปีขึ้นไป

สำหรับติดต่อแลกข้อมูลข่าวสาร เปิดใช้งานเมื่อ 4 กุมภาพันธ์ พ.ศ. 2547โดย มาร์ก ซักเคอร์เบิร์ก นักศึกษาจากมหาวิทยาลัยฮาร์เวิร์ด ในช่วงแรกนั้นเฟซบุ๊กเปิดให้ใช้งานเฉพาะนักศึกษามหาวิทยาลัยฮาร์เวิร์ด ซึ่งต่อมาได้ขยายตัวออกไปสำหรับมหาวิทยาลัยทั่วสหรัฐอเมริกา และตั้งแต่ 11 กันยายน พ.ศ. 2549 ได้ขยายมาสำหรับผู้ใช้ทั่วไปทุกคนเหมือนในปัจจุบัน

จากการศึกษาของเว็บ คอมพีต.คอม ในเดือนมกราคม ค.ศ. 2009 เฟซบุ๊กถือเป็นบริการเครือข่ายสังคมที่มีคนใช้มากที่สุด เมื่อดูจากผู้ใช้ประจำรายเดือน รองลงมาคือ มายสเปซ เอ็นเตอร์เทนเมนต์วีกลี ให้อยู่ในรายชื่อ สิ่งที่ดีที่สุดในสิ้นทศวรรษ และควอนต์แคสต์ ประเมินว่า เฟซบุ๊ก มีผู้ใช้ต่อเดือนราว 135.1 ล้านคน นับเฉพาะในสหรัฐอเมริกา

ข้อมูล ณ วันที่ 4 มกราคม พ.ศ. 2554 จากเฟซบุ๊กมีจำนวนสมาชิกทั้งหมด 584,628,480 สมาชิกทั้วโลก โดยเป็นสมาชิกจากประเทศไทย รวม 6,914,800 สมาชิก 

Seven Wonders of the World(Colossus of Rhodes)

Seven Wonders of the World(Colossus of Rhodes)

       The Colossus of Rhodes (Ancient Greek: ὁ Κολοσσὸς Ῥόδιος ho Kolossòs Rhódios)was a statue of the Greek titan-god of the sun Helios, erected in the city of Rhodes, on the Greek island of the same name, by Chares of Lindos in 280 BC. It is considered one of theSeven Wonders of the Ancient World. It was constructed to celebrate Rhodes' victory over the ruler of Cyprus, Antigonus I Monophthalmus, whose son unsuccessfully besieged Rhodes in 305 BC. Before its destruction in the earthquake of 226 BC, the Colossus of Rhodes stood over 30 meters (98 feet) high, making it one of the tallest statues of theancient world.

Seven Wonders of the World(Mausoleum at Halicarnassus)

Seven Wonders of the World(Mausoleum at Halicarnassus)

      The Mausoleum at Halicarnassus or Tomb of Mausolus  (Modern Greek:Μαυσωλείο της Αλικαρνασσού; Turkish: Halikarnas Mozolesi) was a tomb built between 353 and 350 BC at Halicarnassus (present Bodrum, Turkey) forMausolus, a satrap in the Persian Empire, and Artemisia II of Caria, who was both his wife and his sister. The structure was designed by the Greekarchitects Satyros and Pythius of Priene.

      The Mausoleum was approximately 45 m (148 ft) in height, and the four sides were adorned with sculptural reliefs, each created by one of four Greeksculptors—Leochares, Bryaxis, Scopas of Paros and Timotheus. The finished structure of the mausoleum was considered to be such an aesthetic triumph that Antipater of Sidon identified it as one of his Seven Wonders of the Ancient World. It was destroyed by successive earthquakes from the 12th to the 15th century. 

      The word mausoleum has now come to be used generically for an above-ground tomb.

Seven Wonders of the World(Temple of Artemis)

Seven Wonders of the World(Temple of Artemis)

      The Temple of Artemis or Artemision (Greek: Ἀρτεμίσιον, Turkish:Artemis Tapınağı), also known less precisely as the Temple of Diana, was a Greek temple dedicated to the goddess Artemis and is one of theSeven Wonders of the Ancient World. It was located in Ephesus (near the modern town of Selçuk in present-day Turkey), and was completely rebuilt three times before its eventual destruction in 401. Only foundations and sculptural fragments of the latest of the temples at the site remain.

      The first sanctuary (temenos) antedated the Ionic immigration by many years, and dates to the Bronze Age. Callimachus, in his Hymn to Artemis, attributed it to the Amazons. In the 7th century BC, the old temple was destroyed by a flood. Its reconstruction began around 550 BC, under the Cretan architect Chersiphron and his son Metagenes, at the expense of Croesus of Lydia: the project took 10 years to complete, only to be destroyed in an act of arson by Herostratus. It was later rebuilt.

Antipater of Sidon, who compiled the list of the Seven Wonders, describes the finished temple:

I have set eyes on the wall of lofty Babylon on which is a road for chariots, and the statue of Zeus by the Alpheus, and the hanging gardens, and the colossus of the Sun, and the huge labour of the high pyramids, and the vast tomb of Mausolus; but when I saw the house of Artemis that mounted to the clouds, those other marvels lost their brilliancy, and I said, "Lo, apart from Olympus, the Sun never looked on aught so grand".