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Yesterdayattheswimmingpooleverythingseemedtogowrong.SoonafterIarrived,Isatonmysunglas...
Yesterday at the swimming pool everything seemed to go wrong. Soon after I arrived, I sat on my sunglasses and broke them. Later my bathing [] suit游泳衣caught on the rough [] edge of a chair, tearing [] a hole in the side of the suit. But my worst moment came when I decided to climb up to the high diving [] tower跳台to see what the view [vju:]n.景色, 风景was like.
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昨天在泳池,每件事好似都出了问题。就在我到达时,坐在了我的太阳镜上,把它弄坏了。之后,我的泳衣挂在了椅子的一处粗糙边沿上,在泳衣一侧上弄破了一个洞。但是,当我决定爬上高处跳台看风景时,这才是最坏的时刻
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Computer network appeared in the 50's, so far, has undergone a process from simple to complex, from lower to higher development process. Computer network development history, though not long, but fast.
1946, the world's first electronic computer more than a decade after the advent of time, a small number of computers, the price very expensive. The so-called early computer network is mainly to solve this contradiction arising in the form of a computer through the communication line with a number of directly connected terminals. This is a simple computer online systems, also known as the terminal - a computer network or computer network known as the terminal-oriented.
December 28, 1903, Feng. Iman was born in Budapest, Hungary City. A child, he displayed amazing mathematical talent, according to legend, when the 6-year-old will be able to mental arithmetic 8 mathematics division, 8 years old when he mastered calculus at age 12, went so far as to read the book a highly mathematical "function theory" to the effect ! Later, Feng. Neumann, the father of mathematics in Hungary 〃 〃 charges under the guidance of leaves Seoul to accept strict training. At 18, he and co-instructor in foreign magazine first published mathematical papers.
The second generation of electronic calculators is the transistor calculator. In 1956, the United States to use transistors instead of vacuum tubes Bell Laboratories, has built the world's first all-transistor tube calculator Lepreachaun. It makes calculator the size, weight, power consumption is greatly reduced. To 60 years, the world has produced more than 30,000 units of the transistor calculator, calculation speed has reached 3 million times per second.
To 1956, the world has produced thousands of units of large computer, some of which calculation speed as high as tens of thousands of times per second. These electronic calculators have to vacuum tubes as the main component, so they are called vacuum tube calculator. Take advantage of this generation of electronic calculators, and people will send a satellite days. This is the first generation of electronic calculator. The third generation of electronic calculators small and medium-scale integrated circuit calculator. In 1962, the United States Air Force in cooperation with Texas, to integrated circuits for the calculator's basic electronic components, fabricated in a single experimental prototype. During this period, the volume calculator, power is further reduced, reliability is greatly improved computing speed has reached 40 million times per second. The fourth generation of large scale integrated circuit electronic calculator is a calculator. Is generally believed that this is a matter began in 1970. Now, supercomputer computational speed has reached hundreds of millions of times per second, in scientific research and economic management plays an irreplaceable role; the microcomputer makes Calculator significant reduction in the size and cost, and penetrate into the industrial production and every corner of daily life. Today, to create a computer that has the same functions of the calculator ENIAC, the volume of its one millionth as long as there was enough.
Fifth-generation electronic calculators of the development work have been carried out for many years, whether it is superconducting 〃 〃 fantasy-style calculator, or Optical calculator, biological calculator, artificial intelligence amplifier, have made some progress. This generation will reach the speed of the computer trillion times per second, can be a greater degree of simulation of human intelligence, and in some respects more than human intelligence.
Q. What is the main contents of this article?
A: The history of development of the computer.
1946, the world's first electronic computer more than a decade after the advent of time, a small number of computers, the price very expensive. The so-called early computer network is mainly to solve this contradiction arising in the form of a computer through the communication line with a number of directly connected terminals. This is a simple computer online systems, also known as the terminal - a computer network or computer network known as the terminal-oriented.
December 28, 1903, Feng. Iman was born in Budapest, Hungary City. A child, he displayed amazing mathematical talent, according to legend, when the 6-year-old will be able to mental arithmetic 8 mathematics division, 8 years old when he mastered calculus at age 12, went so far as to read the book a highly mathematical "function theory" to the effect ! Later, Feng. Neumann, the father of mathematics in Hungary 〃 〃 charges under the guidance of leaves Seoul to accept strict training. At 18, he and co-instructor in foreign magazine first published mathematical papers.
The second generation of electronic calculators is the transistor calculator. In 1956, the United States to use transistors instead of vacuum tubes Bell Laboratories, has built the world's first all-transistor tube calculator Lepreachaun. It makes calculator the size, weight, power consumption is greatly reduced. To 60 years, the world has produced more than 30,000 units of the transistor calculator, calculation speed has reached 3 million times per second.
To 1956, the world has produced thousands of units of large computer, some of which calculation speed as high as tens of thousands of times per second. These electronic calculators have to vacuum tubes as the main component, so they are called vacuum tube calculator. Take advantage of this generation of electronic calculators, and people will send a satellite days. This is the first generation of electronic calculator. The third generation of electronic calculators small and medium-scale integrated circuit calculator. In 1962, the United States Air Force in cooperation with Texas, to integrated circuits for the calculator's basic electronic components, fabricated in a single experimental prototype. During this period, the volume calculator, power is further reduced, reliability is greatly improved computing speed has reached 40 million times per second. The fourth generation of large scale integrated circuit electronic calculator is a calculator. Is generally believed that this is a matter began in 1970. Now, supercomputer computational speed has reached hundreds of millions of times per second, in scientific research and economic management plays an irreplaceable role; the microcomputer makes Calculator significant reduction in the size and cost, and penetrate into the industrial production and every corner of daily life. Today, to create a computer that has the same functions of the calculator ENIAC, the volume of its one millionth as long as there was enough.
Fifth-generation electronic calculators of the development work have been carried out for many years, whether it is superconducting 〃 〃 fantasy-style calculator, or Optical calculator, biological calculator, artificial intelligence amplifier, have made some progress. This generation will reach the speed of the computer trillion times per second, can be a greater degree of simulation of human intelligence, and in some respects more than human intelligence.
Q. What is the main contents of this article?
A: The history of development of the computer.
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