[today in history] July 27: model testing pioneer was born; Microsoft acquires qdos; The first laser typesetting Chinese newspaper

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It's today 2022 year 7 month 27 Japan , stay 1961 Years of today ,IBM Launched IBM Selectric Electric typewriter ;Selectric The electric typewriter is an undisputed game changer in the typewriter industry , Unlike other typewriters of that era ,Selectric The electric typewriter consists of 2800 Components , Development takes time 7 year , Adopt golf ball print head design , When the user finishes typing , The print head will automatically return to the beginning of the line ; It is also thought to have inspired current word processing programs , With backspace function .Selectric stay 1986 Development stopped in . By 1986 year ,IBM Said it was sold 1300 Ten thousand units Selectric Electric typewriter . Review the history of science and Technology 7 month 27 Japan , What other key events have happened on this day ？

1945 year 7 month 27 Japan ： Turing prize pioneer in developing model detection technology Edmund Clarke born

Picture source ： Wikipedia

American computer scientist Edmund · Melson · Clarke （Edmund Melson Clarke, Jr） Born in 1945 year 7 month 27 Japan ;1981 year , He and his doctoral student Allen · Emerson （Allen Emerson） The idea of model checking is put forward for the first time and used in the verification of automata concurrent system , Become one of the pioneers of model checking in formal logic research .2007 year , He and Emerson and Joseph · Together, sfakis won the Turing prize for his outstanding contribution to the development of model detection technology . Pittsburgh local time 2020 year 12 month 22 On the afternoon of Sunday （ Beijing time. 12 month 23 The morning of ）, Clarke died of covid-19 infection .

Clark was born in 1967 He received his bachelor's degree in mathematics from the University of Virginia in Charlottesville, Virginia , On 1968 Received a master's degree in mathematics from Duke University in Durham, North Carolina , And in 1968 Got a doctorate in .1976 He received a bachelor's degree in computer science from Cornell University in Ithaca, New York . After a doctorate , He taught in the Department of computer science at Duke University for two years .1978 year , He moved to Harvard University , He was an assistant professor of Computer Science in the Department of Applied Science . He is in 1982 He left Harvard in , He teaches in the Department of computer science at Carnegie Mellon University in Pittsburgh, Pennsylvania .1989 year , He was appointed a full professor .1995 year , He became a member of Carnegie Mellon School of Computer Science FORE Systems The first winner of the professorship .2008 In, he became a university professor ,2015 He became an honorary professor in .

source ： Wikipedia

1979 year 7 month 27 Japan ： The first sample newspaper printed by Chinese character laser phototypesetting system was born

Picture source ： Wikipedia

11 century , Bi Sheng invented movable type printing , It has made great contributions to the development of world civilization ;900 Many years later , A seriously ill scientist led the team , Created and applied the world's first “ Chinese character information processing and laser typesetting system ”, Once again set off the printing industry “ Photoelectric revolution ”, Let the ancient Chinese characters in the information age glow with youthful brilliance . This man , It is Wang Xuan . Professor Wang Xuan is an expert in computer word information processing , Founder of computer Chinese character laser Phototypesetting Technology , The forerunner of contemporary Chinese printing revolution , Founder of founder of Peking University , The technology he presided over opened the way for Chinese characters to bid farewell to type printing , For news 、 The computerization of the whole publishing process has laid the foundation .

1979 year 7 month 27 Japan , The first sample newspaper printed by Chinese character laser phototypesetting system was born . Chinese character laser phototypesetting system is to decompose characters into dot matrix through computer , Then control the laser to scan on the photosensitive film , Use the dot matrix of the exposure point to form text and image .1975 year 5 month ,“ Chinese character laser Phototypesetting Technology ” Hosted by Professor Wang Xuan , The Chinese character information processing technology research office of Peking University is responsible for research and development . Professor Wang Xuan devoted his life to writing 、 graphics 、 Research on computer processing of images ,1984 Promoted to Professor in ;1987 Won the first Bisheng printing Award ;1994 He was elected academician of Chinese Academy of Engineering in .2005 year , The national science and Technology Award Office of the Ministry of science and technology also issued an announcement , Approved the establishment of the China Federation of journalists and technicians “ News science and Technology Award ”, Renamed “ Wang Xuan news science and Technology Award ”.

source ： Wikipedia

1981 year 7 month 27 Japan ： Microsoft from Seattle computer products (SCP) bought QDOS

Picture source ： Wikipedia

QDOS（Quick and Dirty Operating System） It's Seattle computer products （SCP） Based on Intel 8086 Computer package development and sales of an operating system , At present, it has been discontinued . stay SCP On 1980 After authorizing other manufacturers to use the operating system in , The name of the system is changed to 86-DOS.86-DOS With digital research company （Digital Research） Of CP/M Similar command structure and application program interface of operating system , So developers can easily migrate programs from the latter to 86-DOS. later 86-DOS Acquired by Microsoft ,MS-DOS and IBM PC DOS It's from 86-DOS Come and go .

1975 year , Allen and gates teamed up to create Microsoft in Albuquerque, New Mexico , Start selling BASIC Interpreter .1981 year 7 month 27 Japan , Led by Allen , Microsoft bought a company named QDOS Operating system of . at that time , And IBM The term of the agreement is approaching , Gates and Allen are worried that they can't finish the development of the operating system in time , And buy fully functional QDOS after , Microsoft immediately modified its code to meet IBM The requirements of . Last , Microsoft products are IBM Adopt the operating system of the new computer , This cooperation has also become a stepping stone for Microsoft to grow in the future .

later , Founder of digital research company Gary Kildall Check PC DOS, And found it copied CP/M Programming interface ; He wanted to sue IBM, Because at that time IBM claim PC DOS It's our own product . however ,Digital Research Lawyers of think the relevant laws are not clear . For all that ,Kildall Or with IBM Confront , And persuade them to provide CP/M-86 and PC, In exchange for exemption . The debate about the similarity between the two systems continues to this day . But there's no denying it , This acquisition is a key step in the achievement of Microsoft as a technology Empire ; There are many important and successful enterprise acquisitions in the history of computer , If you want to choose a representative , Which acquisition do you think it will be ？ Welcome to the discussion in the comments area .

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