① 丹尼斯·里奇(C語言之父)的英文介紹 要英文!要長的 不能太短!!!!好的補50分!!急用!!!!!
Dennis MacAlistair Ritchie (born September 9, 1941) is an American computer scientist notable for his influence on C and other programming languages, and on operating systems such as Multics and Unix. He received the Turing Award in 1983 and the National Medal of Technology in 1998. Ritchie was the head of Lucent Technologies System Software Research Department when he retired in 2007.
Born in Bronxville, New York, Ritchie graated from Harvard with degrees in physics and applied mathematics. In 1967, he began working at the Bell Labs' Computing Sciences Research Center.
Ritchie is best known as the creator of the C programming language and a key developer of the Unix operating system, and as co-author of the definitive book on C, The C Programming Language, commonly referred to as 'K/R' or K&R (in reference to the authors Kernighan and Ritchie).
Ritchie's invention of C and his role in the development of Unix alongside Ken Thompson, has placed him as an important pioneer of modern computing. The C language is still widely used today in application and operating system development and its influence is seen in most modern programming languages. Unix has also been influential, establishing concepts and principles that are now well-established precepts of computing. The popular Linux operating system and its tools are descendants of Ritchie's work and the Windows operating systems include Unix compatibility tools and C compilers for developers.
Ritchie has said that creating the C language 'looked like a good thing to do' and that anyone else in the same place at the same time would have done the same thing, though Bell Labs colleague Bjarne Stroustrup, developer of C++, said that "if Dennis had decided to spend that decade on esoteric math, Unix would have been stillborn."
Following the success of Unix, Ritchie continued research into operating systems and programming languages with contributions to the Plan 9 and Inferno operating systems and the Limbo programming language.
In 1983, Ritchie and Ken Thompson jointly received the Turing Award for their development of generic operating systems theory and specifically for the implementation of the UNIX operating system. Ritchie's Turing Award lecture was titled, "Reflections on Software Research."
On April 27, 1999, Thompson and Ritchie jointly received the 1998 National Medal of Technology from President Bill Clinton for co-inventing the UNIX operating system and the C programming language which together have led to enormous advances in computer hardware, software, and networking systems and stimulated growth of an entire instry, thereby enhancing American leadership in the Information Age
Dennis Ritchie is often referred to as "dmr" (his Bell Labs email address) in technical discussion groups.
② 學生成績管理軟體
Combat hasn't started, the Houston rockets have out?
At least from now, the report today in the ESPN, according to a well-informed insiders said, Chris bosh, has joined the team next season in the five teams, they are Chicago, Los Angeles lakers, Miami, New York knicks and the Toronto raptors. Namely, if the raptors want a sign-and-trade deal bosh, also can and oxen, the lakers, heat or knicks to discuss, otherwise, bosh is likely to give up a sign-and-trade and become a free agent, then, is the raptors draw water with a sieve.
Actually, this list is bosh explicitly tell us, his real purpose is wanted and lebron James such superstar together, played in the new season belongs to own a sky.
But in fact, the so-called informed the insider also is so, said: "if lebron decided that you sign the knicks will see bosh to New York; if lebron to the bull, it also can be in there. Bosh if lebron choice in Cleveland, the raptors choice.",wholesale NBA jerseys; So then, as a free agent in the summer of several superstar, including dwyane wade -,NHL Jersey, Chris bosh, many people, including all actually in watching lebron James dynamic, there is no hope, and the rockets really?
,Trevor NHL Jersey don't regret leaving Los Angeles;
Maybe James and bosh etc are very good friends, but it may not be able to be very good. From this year's playoffs enough, if we want to go further in the playoffs, inside must possess strong deterrent. The celtics in the insider said although the height is in, but Kevin garnett, rasheed Wallace plus big baby Davis, really is a independently.this strength. At least in the game, and the knights of the celtics paint a lot cheaper.
But not a bosh inside strength player, he's more adept at using his opponent attacks and wide range of al, defensive player to periphery, then use their weight and steps to score. If you want to speak of the attack and defend basket, we have to admit that covered area, the peak of bosh than garnett, still have considerable disparity. Therefore, the pursuit and James bosh blindly partner, isn't wise decision. They both high salary, doomed to any team, once they get two players, will certainly cannot hold any other slightly good points, and the star's star. Unless the two of them, but since Ken came from James there is obviously down is unlikely, but came here, since calderon even bosh agree, raptors can agree?
There are two stars in the playoffs, it is the base to get good grades. But just rely on two superstar, is destined to be less championship. Therefore, this blindly follow bosh James is not wise, absolute, and even some childish.
But, now, raptors since no public bosh selected team, that all this is just black-box stage, the rockets have lots of time to let mind-that bosh. After all, submit the five teams today, tomorrow to fill the list on the team. The key is, now need someone to tell bosh these,cheap authentic jerseys, need someone to shout out, Houston needs Chris bosh, joining, need someone to join after the rockets bosh grand blueprint spread to tell him. This difficult task, can let the rockets general manager daryl morey - to reach lille.
Of course, if we have said before, that yao will be able to use these words in the name of the indivial words aloud, then, the effect will be better.
③ 如何將西門子觸摸屏和博途16通訊
西門子觸摸屏和PLC通訊大概分為四步。
以S7300PLC為例PLC，設置通訊地址，建立通訊變數。組態觸摸屏，建立與PLC的通訊。綁定變數，組態畫面。模擬運行，工程下載。
組態PLC，設置通訊地址，建立通訊變數，打開博圖軟體，創建新項目，並命名為KTP900_S7-300。完成後點擊項目視圖。西門子PLC硬體組態：插入CPU:CPU315-2PN/DP。打開PLC設備與網路視圖，點擊315CUP的網口1，為CPU設置IP地址。創建變數表，並在變數表裡面創建要通訊的變數。點擊PLC項目，編譯並下載PLC項目(可以先模擬)，如圖配置號PG/PC介面，搜索到建立好的設備，並下載。
組態觸摸屏並建立通訊雙擊添加新設備，插入KTP900，點擊確定按鈕後，出現HIM組態向導，在PLC連接選項卡下，點擊『瀏覽』，選擇剛才插入的PLC，並選擇乙太網介面，點擊完成後進入觸摸屏編程頁面。查看連接信息綁定變數，組態畫面，模擬運行，工程下載。