2016 is the 100th anniversary of Claude Elwood Shannon. This genius of American scientists has proposed the concept of information entropy, which laid the foundation for information theory and digital communication, and is known as the "father of information theory." Not only that, he is also a mathematician, cryptographer, computer expert, artificial intelligence scientist... Without him, modern information technology will not be born. His wisdom shines on the rapid development of the information society and constantly changes this. world. In order to commemorate this outstanding scientist, "People's Posts and Telecommunications" newspaper serialized the "Shannonong Biography" written by Yang Yixian, a professor at Beijing University of Posts and Telecommunications and director of the Information Security Center, to take you into the legendary life of Shannon.
Professor Yang Yixian, Professor of Beijing University of Posts and Telecommunications and Director of Information Security Center
After Laozi wrote the Tao Te Ching, he rode the blue cow to the valley and rose to heaven. However, after Shannon founded Information Theory, where did he go?
"Xian Nong" is an old urchin
After research by the old man, this time he went to the "kindergarten" and went there to become a "sin". Therefore, his name was also translated into "Shen Nong".
He converted his home into a "kindergarten." What Franklin Medal, the American Industrial Electronics Engineering Association Gloria Award, the National Scientific Research Cooperation Award, the Lebman Memorial Award, the American Electrical and Electronic Engineering Association Honor Medal, the American Technology Association Harvey Award, and the Royal Academy of Sciences of Belgium And the academician certificate of the Royal Netherlands Academy of Arts, the honorary doctoral certificate of many institutions of higher learning such as Oxford University, the certificate of the American Academy of Sciences, the certificate of the American Academy of Engineering, etc., all thrown into a small room, only a mischievous "Juggling Doctor" The certificate is proudly placed in a conspicuous place.
The other rooms in the "Kindergarten" can be lively: there are as many as 5 pianos, and there are more than 30 kinds of brass instruments. There are 3 clowns with 11 loops of juggling machines, clock-driven 7 balls and 5 sticks, talking chess machines, juggling instruments, and intellectual readers. With 3 fingers, you can grab the pieces of the chess piece. Buzzer and recorder, folding knife with 100 blades, spring high cane with engine, flying saucer driven by rocket, guessing machine that you can guess, etc. Most of these toys were made by him. He even built a lift for children to play by the lake, about 600 feet long and with multiple seats.
How about, this 1.78-meter-high incense grandfather is worthy of being a veritable old urchin.
If God is not eager to ask him to be an assistant, it is estimated that the next milestone of mankind will appear in the "Juggling" world. Because it is said that before the death of Xian, the old urchin has begun to write "unified juggling field theory." Even his masterpieces of poetry, also named "the ritual of the Rubik's Cube", are meant to pay tribute to the "Rubic Rubik's Cube" that was very popular in the late 1970s.
The ancestors of the "Alpha Dog" "Shannon Rat"
Dude, remember the Alpha dog that defeated the chess Li Shishi! In fact, Grandpa Xiang has long been studying "the machine that can play chess". He is one of the first scientists in the world to propose "computers can play chess with humans." In 1950, he wrote an article for Scientific American, expounding the "method of realizing human-machine game"; his chess program was also published in the "Programmingacomputerforplayingchess". In 1956, on the MANIAC computer in Los Alamos, he showed off the chess program. In order to explore the mystery of the chess machine, he actually spent a lot of working time playing chess. This made his boss "more or less awkward", but he was embarrassed to stop him. In this regard, Xiang "Da Niu" did not apologize, but some were elated: "I often do things with my own interests, do not value their final value, not to care about the value of this thing for the world. I spent a lot of time On something that is purely useless."
Look at it, look at it, this is a slogan, and the discipline of going to work is no more!
Hotel Door Lock Motor also known as Smart Hotel Door Lock Motor, perform operations in the hotel door lock, at this point, the cardholder simply throw the door handle to open the door. That is to say the hotel door lock motor is used to open the door.
Induction door lock is a infrared sensor through induction of new security equipment, widely used in hotels, hotels and clubs, and other areas of the smart IC card, rf door lock, generally divided into induction induction door lock system, provides the high quality for the hotel induction door lock system. Induction in the European and American countries have been developed to a certain extent, has been a measure of the quality of life index of height and life.
Operating temperature range:
Hotel door lock motor should be used at a temperature of -10~60℃.
The figures stated in the catalog specifications are based on use at ordinary room temperature catalog specifications re based on use at ordinary room temperature (approximately20~25℃.
If a Smart Hotel Door Lock Motor is used outside the prescribed temperature range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.Depending on the temperature conditions ,it may be possible to deal with them by changing the grease of the motor's parts.Please feel free to consult with us about this.
Storage temperature range:
lock motor should be stored ta a temperature of -15~65℃.
In case of storage outside this range,the grease on the gearhead area will become unable to function normally and the motor will become unable to start.
Service life:
The longevity of Smart Hotel Door Lock Motor is greatly affected by the load conditions , the mode of operation,the environment of use ,etc.Therefore,it is necessary to check the conditions under which the product will actually be used .The following conditions will have a negative effect on longevity.Please consult with us should any of them apply.
â—Use with a load that exceeds the rated torque
â—Frequent starting
â—Momentary reversals of turning direction
â—Impact loads
â—Long-term continuous operation
â—Forced turning using the output shaft
â—Use in which the permitted overhang load or the permitted thrust load is exceeded
â—A pulse drive ,e.g.,a short break,counter electromotive force,PWM control
â—Use of a voltage that is nonstandard as regards the rated voltage
â—Use outside the prescribed temperature or relative-humidity range,or in a special environment.
â—Please consult with us about these or any other conditions of use that may apply,so that we can be sure that you select the most appropriate model.
Hotel door lock motor applicable door types: building doors, fire doors, security doors, door and office door, fire doors, etc. Applicable scenario: family, company, office buildings, schools, shopping malls, such as Banks.
when it come to volume production,we're a major player as well .each month,we rurn out 600000 units,all of which are compliant with the rohs directive.Have any questions or special needed, please contact us, we have the engineer group and best sales department to service to you
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