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United States
The United States of America (commonly referred to as the United States, the U.S., the USA, or America) is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its 48 contiguous states and Washington, D.C., the capital district, lie between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the south. The state of Alaska is in the northwest of the continent, with Canada to its east and Russia to the west across the Bering Strait. The state of Hawaii is an archipelago in the mid-Pacific. The country also possesses several territories, or insular areas, in the Caribbean and Pacific. At 3.79 million square miles (9.83 million km2) and with about 306 million people, the United States is the third or fourth largest country by total area, and third largest by land area and by population. The United States is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many countries. The U.S. economy is the largest national economy in the world, with an estimated 2008 gross domestic product (GDP) of US $14.3 trillion (23% of the world total based on nominal GDP and almost 21% at purchasing power parity). The nation was founded by thirteen colonies of Great Britain located along the Atlantic seaboard. On July 4, 1776, they issued the Declaration of Independence, which proclaimed their independence from Great Britain and their formation of a cooperative union. The rebellious states defeated Great Britain in the American Revolutionary War, the first successful colonial war of independence. The Philadelphia Convention adopted the current United States Constitution on September 17, 1787; its ratification the following year made the states part of a single republic with a strong central government. The Bill of Rights, comprising ten constitutional amendments guaranteeing many fundamental civil rights and freedoms, was ratified in 1791. In the 19th century, the United States acquired land from France, Spain, the United Kingdom, Mexico, and Russia, and annexed the Republic of Texas and the Republic of Hawaii. Disputes between the agrarian South and industrial North over states' rights and the expansion of the institution of slavery provoked the American Civil War of the 1860s. The North's victory prevented a permanent split of the country and led to the end of legal slavery in the United States. By the 1870s, the national economy was the world's largest. The Spanish–American War and World War I confirmed the country's status as a military power. In 1945, the United States emerged from World War II as the first country with nuclear weapons, a permanent member of the United Nations Security Council, and a founding member of NATO. The end of the Cold War and the dissolution of the Soviet Union left the United States as the sole superpower. The country accounts for approximately 50% of global military spending and is a leading economic, political, and cultural force in the world.
電脳 - コンピュータ - 計算機 - ノートパソコン
電脳 【でんのう】 (n) {comp} electronic brain; computer (primarily Chinese usage) 電脳（でんのう） 「電子頭脳」の略→コンピュータ 中国語においてもコンピュータ（一般的には特にパーソナルコンピュータ）を指す。→zh:電腦、zh:個人電腦、zh:手提電腦 株式会社電脳→電脳 (企業) 電脳化→攻殻機動隊
Electronic Computer
A computer is a machine that manipulates data according to a set of instructions. Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). These were the size of a large room, consuming as much power as several hundred modern personal computers (PCs).[1] 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.[2] Simple computers are small enough to fit into a wristwatch, and can be powered by a watch battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". The embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are however the most numerous.
Ϛ
Unicode Data Name GREEK LETTER STIGMA Block Greek and Coptic Category Letter, Uppercase [Lu] Combine 0 BIDI Left-to-Right [L] Mirror N Old name GREEK CAPITAL LETTER STIGMA Lower case U+03DB Comments apparently in origin a cursive form of digamma the name "stigma" originally applied to a medieval sigma-tau ligature, whose shape was confusably similar to the cursive digamma used as a symbol with a numeric value of 6 See Also roman numeral six late form U+2185 Version Unicode 1.1.0 (June, 1993)
Ϙ
Unicode Data Name GREEK LETTER ARCHAIC KOPPA Block Greek and Coptic Category Letter, Uppercase [Lu] Combine 0 BIDI Left-to-Right [L] Mirror N Index entries Greek Archaic Letters ISO * Lower case U+03D9 Version Unicode 3.2.0 (March, 2002)
ϝ
Unicode Data Name GREEK SMALL LETTER DIGAMMA Block Greek and Coptic Category Letter, Lowercase [Ll] Combine 0 BIDI Left-to-Right [L] Mirror N Upper case U+03DC Title case U+03DC Comments used as a symbol with a numeric value of 6 Version Unicode 3.0.0 (September, 1999)
Personal Computer
A computer is a programmable machine that receives input, stores and manipulates data, and provides output in a useful format. Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). These 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 small pocket devices, and can be powered by a small battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". The embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are however the most numerous. The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a certain minimum capability is, in principle, capable of performing the same tasks that any other computer can perform. Therefore computers ranging from a netbook to a supercomputer are all able to perform the same computational tasks, given enough time and storage capacity.
Computar - Computers
A computer is a programmable machine that receives input, stores and manipulates data, and provides output in a useful format. Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). These 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 small pocket devices, and can be powered by a small battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". The embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are however the most numerous. The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a certain minimum capability is, in principle, capable of performing the same tasks that any other computer can perform. Therefore computers ranging from a netbook to a supercomputer are all able to perform the same computational tasks, given enough time and storage capacity.
ϟ
Unicode Data Name GREEK SMALL LETTER KOPPA Block Greek and Coptic Category Letter, Lowercase [Ll] Combine 0 BIDI Left-to-Right [L] Mirror N Upper case U+03DE Title case U+03DE Comments used in modern Greek as a symbol with a numeric value of 90, as in the dating of legal documentation Version Unicode 3.0.0 (September, 1999)
ϝ
Unicode Data Name GREEK SMALL LETTER DIGAMMA Block Greek and Coptic Category Letter, Lowercase [Ll] Combine 0 BIDI Left-to-Right [L] Mirror N Upper case U+03DC Title case U+03DC Comments used as a symbol with a numeric value of 6 Version Unicode 3.0.0 (September, 1999)
Ϛ
Unicode Data Name GREEK LETTER STIGMA Block Greek and Coptic Category Letter, Uppercase [Lu] Combine 0 BIDI Left-to-Right [L] Mirror N Old name GREEK CAPITAL LETTER STIGMA Lower case U+03DB Comments apparently in origin a cursive form of digamma the name "stigma" originally applied to a medieval sigma-tau ligature, whose shape was confusably similar to the cursive digamma used as a symbol with a numeric value of 6 See Also roman numeral six late form U+2185 Version Unicode 1.1.0 (June, 1993)
Ϙ
Unicode Data Name GREEK LETTER ARCHAIC KOPPA Block Greek and Coptic Category Letter, Uppercase [Lu] Combine 0 BIDI Left-to-Right [L] Mirror N Index entries Greek Archaic Letters ISO * Lower case U+03D9 Version Unicode 3.2.0 (March, 2002)
ϟ
Unicode Data Name GREEK SMALL LETTER KOPPA Block Greek and Coptic Category Letter, Lowercase [Ll] Combine 0 BIDI Left-to-Right [L] Mirror N Upper case U+03DE Title case U+03DE Comments used in modern Greek as a symbol with a numeric value of 90, as in the dating of legal documentation Version Unicode 3.0.0 (September, 1999)
◦ Symbol is Everywhere ◦
符号理論において、符号（ふごう、code）とは、シンボルの集合S, Xがあるとき、Sに含まれるシンボルのあらゆる系列から、Xに含まれるシンボルの系列への写像のことである。Sを情報源アルファベット、Xを符号アルファベットという。
