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1、History of computingMain article: History of computing hardwareThe first use of the word computer was recorded in 1613, referring to a person who carried out calculations, or computations, and the word continued with the same meaning until the middle of the 20th century. From the end of the 19th cen

2、tury the word began to take on its more familiar meaning, a machine that carries out computations. Limited-function early computersThe Jacquard loom, on display at the Museum of Science and Industry in Manchester, England, was one of the first programmable devices.The history of the modern computer

3、begins with two separate technologies, automated calculation and programmability, but no single device can be identified as the earliest computer, partly because of the inconsistent application of that term. A few devices are worth mentioning though, like some mechanical aids to computing, which wer

4、e very successful and survived for centuries until the advent of the electronic calculator, like the Sumerian abacus, designed around 2500 BC of which a descendant won a speed competition against a modern desk calculating machine in Japan in 1946, the slide rules, invented in the 1620s, which were c

5、arried on five Apollo space missions, including to the moon and arguably the astrolabe and the Antikythera mechanism, an ancient astronomical computer built by the Greeks around 80 BC. The Greek mathematician Hero of Alexandria (c. 1070 AD) built a mechanical theater which performed a play lasting 1

6、0 minutes and was operated by a complex system of ropes and drums that might be considered to be a means of deciding which parts of the mechanism performed which actions and when. This is the essence of programmability.Around the end of the 10th century, the French monk Gerbert dAurillac brought bac

7、k from Spain the drawings of a machine invented by the Moors that answered either Yes or No to the questions it was asked. Again in the 13th century, the monks Albertus Magnus and Roger Bacon built talking androids without any further development.In 1642, the Renaissance saw the invention of the mec

8、hanical calculator, a device that could perform all four arithmetic operations without relying on human intelligence. The mechanical calculator was at the root of the development of computers in two separate ways. Initially, it was in trying to develop more powerful and more flexible calculators tha

9、t the computer was first theorized by Charles Babbage and then developed. Secondly, development of a low-cost electronic calculator, successor to the mechanical calculator, resulted in the development by Intel of the first commercially available microprocessor integrated circuit.First general-purpos

10、e computersIn 1801, Joseph Marie Jacquard made an improvement to the textile loom by introducing a series of punched paper cards as a template which allowed his loom to weave intricate patterns automatically. The resulting Jacquard loom was an important step in the development of computers because t

11、he use of punched cards to define woven patterns can be viewed as an early, albeit limited, form of programmability.In 1837, Charles Babbage was the first to conceptualize and design a fully programmable mechanical computer, his analytical engine. Limited finances and Babbages inability to resist ti

12、nkering with the design meant that the device was never completed ; nevertheless his son, Henry Babbage, completed a simplified version of the analytical engines computing unit (the mill) in 1888. He gave a successful demonstration of its use in computing tables in 1906. This machine was given to th

13、e Science museum in South Kensington in 1910.In the late 1880s, Herman Hollerith invented the recording of data on a machine-readable medium. Earlier uses of machine-readable media had been for control, not data. After some initial trials with paper tape, he settled on punched cards . To process the

14、se punched cards he invented the tabulator, and the keypunch machines. These three inventions were the foundation of the modern information processing industry. Large-scale automated data processing of punched cards was performed for the 1890 United States Census by Holleriths company, which later b

15、ecame the core of IBM. By the end of the 19th century a number of ideas and technologies, that would later prove useful in the realization of practical computers, had begun to appear: Boolean algebra, the vacuum tube (thermionic valve), punched cards and tape, and the teleprinter.During the first ha

16、lf of the 20th century, many scientific computing needs were met by increasingly sophisticated analog computers, which used a direct mechanical or electrical model of the problem as a basis for computation. However, these were not programmable and generally lacked the versatility and accuracy of mod

17、ern digital computers.Alan Turing is widely regarded as the father of modern computer science. In 1936 Turing provided an influential formalisation of the concept of the algorithm and computation with the Turing machine, providing a blueprint for the electronic digital computer. Of his role in the c

18、reation of the modern computer, Time magazine in naming Turing one of the 100 most influential people of the 20th century, states: The fact remains that everyone who taps at a keyboard, opening a spreadsheet or a word-processing program, is working on an incarnation of a Turing machine. EDSAC was on

19、e of the first computers to implement the stored-program (von Neumann) architecture.Die of an Intel 80486DX2 microprocessor (actual size: 126.75 mm) in its packaging.The AtanasoffBerry Computer (ABC) was the worlds first electronic digital computer, albeit not programmable. Atanasoff is considered t

20、o be one of the fathers of the computer.Conceived in 1937 by Iowa State College physics professor John Atanasoff, and built with the assistance of graduate student Clifford Berry, the machine was not programmable, being designed only to solve systems of linear equations. The computer did employ para

21、llel computation. A 1973 court ruling in a patent dispute found that the patent for the 1946 ENIAC computer derived from the AtanasoffBerry Computer.The first program-controlled computer was invented by Konrad Zuse, who built the Z3, an electromechanical computing machine, in 1941. The first program

22、mable electronic computer was the Colossus, built in 1943 by Tommy Flowers.George Stibitz is internationally recognized as a father of the modern digital computer. While working at Bell Labs in November 1937, Stibitz invented and built a relay-based calculator he dubbed the Model K (for kitchen tabl

23、e, on which he had assembled it), which was the first to use binary circuits to perform an arithmetic operation. Later models added greater sophistication including complex arithmetic and programmability. A succession of steadily more powerful and flexible computing devices were constructed in the 1

24、930s and 1940s, gradually adding the key features that are seen in modern computers. The use of digital electronics (largely invented by Claude Shannon in 1937) and more flexible programmability were vitally important steps, but defining one point along this road as the first digital electronic comp

25、uter is difficult. Notable achievements include. Konrad Zuses electromechanical Z machines. The Z3 (1941) was the first working machine featuring binary arithmetic, including floating point arithmetic and a measure of programmability. In 1998 the Z3 was proved to be Turing complete, therefore being

26、the worlds first operational computer.The non-programmable AtanasoffBerry Computer (commenced in 1937, completed in 1941) which used vacuum tube based computation, binary numbers, and regenerative capacitor memory. The use of regenerative memory allowed it to be much more compact than its peers (bei

27、ng approximately the size of a large desk or workbench), since intermediate results could be stored and then fed back into the same set of computation elements.The secret British Colossus computers (1943), which had limited programmability but demonstrated that a device using thousands of tubes coul

28、d be reasonably reliable and electronically reprogrammable. It was used for breaking German wartime codes.The Harvard Mark I (1944), a large-scale electromechanical computer with limited programmability.The U.S. Armys Ballistic Research Laboratory ENIAC (1946), which used decimal arithmetic and is s

29、ometimes called the first general purpose electronic computer (since Konrad Zuses Z3 of 1941 used electromagnets instead of electronics). Initially, however, ENIAC had an inflexible architecture which essentially required rewiring to change its programming.Stored-program architectureReplica of the S

30、mall-Scale Experimental Machine (SSEM), the worlds first stored-program computer, at the Museum of Science and Industry in Manchester, EnglandSeveral developers of ENIAC, recognizing its flaws, came up with a far more flexible and elegant design, which came to be known as the stored-program architec

31、ture or von Neumann architecture. This design was first formally described by John von Neumann in the paper First Draft of a Report on the EDVAC, distributed in 1945. A number of projects to develop computers based on the stored-program architecture commenced around this time, the first of which was

32、 completed in 1948 at the University of Manchester in England, the Manchester Small-Scale Experimental Machine (SSEM or Baby). The Electronic Delay Storage Automatic Calculator (EDSAC), completed a year after the SSEM at Cambridge University, was the first practical, non-experimental implementation

33、of the stored-program design and was put to use immediately for research work at the university. Shortly thereafter, the machine originally described by von Neumanns paperEDVACwas completed but did not see full-time use for an additional two years.Nearly all modern computers implement some form of t

34、he stored-program architecture, making it the single trait by which the word computer is now defined. While the technologies used in computers have changed dramatically since the first electronic, general-purpose computers of the 1940s, most still use the von Neumann architecture.Beginning in the 19

35、50s, Soviet scientists Sergei Sobolev and Nikolay Brusentsov conducted research on ternary computers, devices that operated on a base three numbering system of ?1, 0, and 1 rather than the conventional binary numbering system upon which most computers are based. They designed the Setun, a functional

36、 ternary computer, at Moscow State University. The device was put into limited production in the Soviet Union, but supplanted by the more common binary architecture.Semiconductors and microprocessorsComputers using vacuum tubes as their electronic elements were in use throughout the 1950s, but by th

37、e 1960s had been largely replaced by semiconductor transistor-based machines, which were smaller, faster, cheaper to produce, required less power, and were more reliable. The first transistorised computer was demonstrated at the University of Manchester in 1953. In the 1970s, integrated circuit tech

38、nology and the subsequent creation of microprocessors, such as the Intel 4004, further decreased size and cost and further increased speed and reliability of computers. By the late 1970s, many products such as video recorders contained dedicated computers called microcontrollers, and they started to

39、 appear as a replacement to mechanical controls in domestic appliances such as washing machines. The 1980s witnessed home computers and the now ubiquitous personal computer. With the evolution of the Internet, personal computers are becoming as common as the television and the telephone in the house

40、hold.Modern smartphones are fully programmable computers in their own right, and as of 2009 may well be the most common form of such computers in existenc.历史的计算主要文章:计算机硬件的历史 在第一次使用“计算机”这个词被记录在1613年,指的是对一个人进行了计算,或计算,与词的意思相同,直到继续20世纪中期。19世纪末开始其更熟悉的含义,一个机器进行计算。Limited-function早期计算机 雅卡尔的展览上,在科学工业博物馆在曼彻斯

41、特,是英国最早的一种可编程设备。 现代计算机的历史开始于两个独立的技术,自动计算和可编程,但没有一种单一的设备可以看成是最早的电脑,部分的原因是由于不应用那个术语。一些设备值得一提的是,虽然喜欢一些机械复制计算,很成功,并且存活了几个世纪,来临的电子计算器,像苏美尔算盘,大约在公元前2500年左右的设计赢得竞争的后代对现代书桌速度计算机器在1946年日本滑动规则,起源于1620年代,进行了五阿波罗太空机构,包括月球等机制,一个古老的天文计算机建造大约在公元前80年的希腊人。亚历山大的希腊数学家的英雄(公元前10 -公元70年)建造了一个机械剧院演了一出剧的持续10分钟的时间,是一个复杂的旋转系

42、统操作的绳索和桶,可能会被认为是一种手段决定的哪个部位进行行为和机理的时候。这是可编程的本质。 十世纪末,法国僧侣带回来斯韦二氏西班牙画的机器发明的,要么摩尔人回答是或否的问题。在13世纪,僧侣们Albertus马格努斯和罗杰培根说没有任何建造机器人的进一步发展。 1642年,文艺复兴时期的看见发明的机械计算器,一种装置能完成所有的四个算术运算，不用依赖人类的智力。机械计算器的根源是电脑的发展有两种方式。最初,是在试图发展更强大和更灵活的计算器,电脑是第一个被人们记得查尔斯巴贝奇,然后理论发展。其次,开发的一种低成本的电子计算器继任者、机械计算器,造成了发展的第一个商业化可用英特尔处理器集成电

43、路。 第一次通用计算机 1801年,约瑟夫玛丽做了一个改进提花织机介绍纺织一系列打孔纸质卡作为一个模板使织机编织自动错综复杂的模式。结果提花机是一个重要的发展历程中的电脑,因为使用穿孔卡片来定义编织模式可被看作是早,虽然有限,可编程的形式。 1837年,查尔斯巴巴奇是第一个构思和设计一个完全可编程机械计算机,他的分析引擎。有限的财政和巴巴奇未能抵抗摆弄设计意味着装置是根本没完成的;然而他的儿子,亨利巴巴奇,完成了一个简化版本的分析引擎的运算单元(厂)于1888年。他给了一个成功的示范用于计算表于1906年。这台机器是给科学博物馆位于南肯辛顿于1910年。 在1880年代晚期,赫尔曼。霍尔瑞斯发

44、明了记录的一种机器可以阅读的数据中。机器的使用媒体早些时候被控制,没有数据。“经过一段时间的试验,他住在纸带上穿孔卡片“处理这些穿孔卡片他发明了针孔制表机。这三个发明是基础的现代信息加工业。大型自动化的数据处理进行了穿孔卡片为1890年美国人口普查由霍勒里斯的公司,后来成为了IBM的核心。19世纪末大量的新技术、新思路,后来被证明是有用的计算机实现的实践,已经开始出现:布尔代数,真空管(计算机阀),穿孔卡片和磁带,电传打字机。 在20世纪初,许多科学计算需要受到了越来越复杂的模拟计算机,它通过直接机械或电气模型为基础计算问题。然而,这不是编程,通常缺乏的通用性和准确性的现代数字计算机。 阿兰图

45、灵就被广泛认为是现代计算机科学之父。在1936年提供了一个有影响力的正规化涂林的概念和计算方法与涂林机器,提供电子数字计算机的蓝图。他的角色在创作现代计算机的时候,时代杂志在20世纪命名图灵的100位最具影响力的人物之一,声明:“事实是,每个人在一个键盘,打开水龙头电子数据表或一个字处理程序,正在涂林的化身”。这Zuse虚拟的某种知识世界,1941年,被认为是世界上的第一个工作可编程、全自动计算机器。EDSAC是其中第一个计算机来实现stored-program(冯。诺依曼)的建筑。 一个英特尔80486 DX2微处理器(实际尺寸:126.75毫米),在它的包装。 Atanasoff-Berr

46、y的计算机(ABC)是世界上最早的电子数字计算机,但不可编程的。阿坦那索夫被认为是其中一位电脑之父。它孕育于1937年由爱荷华州立大学物理学教授约翰?阿坦那索夫,修筑协助研究生克利夫?贝瑞,机器没有可编程的,只有解决系统在设计线性方程组。并采用计算机并行处理能力。1973年专利纠纷的法院判决书中发现的专利1946 ENIAC计算机来源于Atanasoff-Berry电脑。 第一个程控计算机发明的康拉德祖萨、谁建的虚拟的某种知识世界,机电一体化计算机器,在1941年。第一个可编程电子计算机是庞然大物,始建于1943年由汤米花朵。 乔治是国际公认的父亲的现代数字计算机。在工作时,在贝尔实验室在19

47、37年11月,Stibitz发明,搭建了一个基于继电器的计算器他称为“模型K”(“厨房桌子”,但他聚集它),这是第一个使用二进制电路执行算术运算。最近的模型更大的复杂性增加包括复杂的算术和可编程。一个接一个的稳定更强大和灵活的计算装置建于1940年代和1930年代,逐渐增加的主要特点是出现在现代的计算机。使用数码电子(主要是在1937年发明的克劳德夏侬)和更灵活的可编程是至关重要的步骤,但确定一个点沿着这条道路是“第一个电子数字计算机”是困难的。显著的成果包括。 康拉德祖萨机电“Z机器”。这个虚拟的某种知识世界(1941)是第一个以二进制算术工作机,包括浮点运算和可编程的一个衡量标准。在199

48、8年,虚拟的某种知识世界被证明是图灵完整,因此被世界上第一个操作电脑。 可编程的的计算机(开始于1937年,在1941年完成)采用真空管基础计算、二进制数字,和蓄热式电容器的记忆。使用蓄热式记忆允许他的作品被更紧凑的比它的同行出色(正在约的体积有一个大桌子或平台,因为中间结果可以存储,然后反馈到相同的一组计算元素。 英国的秘密巨神像电脑(1943年),有限但显示装置可编程使用成千上万的管可以合理可靠和电子系统中可编程门。它是用来破坏德国战时的代码。 哈佛马克一世(1944年),一个大型机电式计算机有限的可编程。 美国军队的弹道研究实验室ENIAC(1946),采用十进制算法和有时被称为第一次通

49、用电子计算机(因为康拉德?祖萨的虚拟的某种知识世界1941使用电磁铁代替电子)。最初,然而,ENIAC有一个呆板的建筑本质要求改变其重新编程。 小规模的实验机的复制品(SSEM),世界上第一个可存储电脑,在科学工业博物馆在曼彻斯特,英格兰电子计分数字计算机的几个开发商,承认其缺点,想出了一个更加灵活和优雅的设计,这后来被称作“存储建筑”或冯诺依曼结构。本设计是第一个正式的描述由约翰冯纽曼在纸的初稿EDVAC的一份报告显示,分布在1945年。许多项目建立计算机基于存储建筑开始在这个时候,其中第一本于1948年完工,在英国曼彻斯特大学的,这位小型实验机(SSEM或“宝贝”)。电子延迟存储自动计算器(EDSAC),完成后一年SSEM在剑桥大学,是第一个实用的、non-experimental