In other words, as far as my consciousness is concerned, all I know is the command issued and the response signal sent back. For me personally, the fact that the signal passes through a machine or a person in its mediation stage is irrelevant, and in any case, it does not change my relationship with the signal too much. Thus, engineering control theory, whether human, animal, or mechanical, is an integral part of information theory. Of course, there are differences in detail both in the message and in the control problem, not only between the organism and the machine, but also in their respective smaller spheres. The purpose of cybernetics is to develop language and techniques that enable us to really solve the general problems of control and communication, but it also needs to find a set of special ideas and techniques under the guidance of certain concepts to distinguish the special manifestations of control and communication. The commands we use to control our environment are the messages we give to it. These commands,digital signage kiosk, like any form of information, are broken down in transit. They generally arrive in a less legible form, certainly no more legible than when they were sent. In control and communication, we must fight against the natural tendency to reduce organization and to impair meaning, that is, to fight against Gibbs's tendency to increase entropy. There is much in this book about the limits of communication within and between individuals. Man is bound to the world that his own senses can perceive. Whatever information he receives has to be adjusted by his brain and nervous system,smart whiteboard price, and only after a specific process of storage, collation and selection does it enter the effector, usually his muscles. These effectors in turn act on the outside world, and at the same time react on the central nervous system through receptors such as the endings of the motor sensory organs, and the information received by the motor sensory organs is combined with the information stored in the past to affect future actions. The content of the name information is what we exchange with the outside world when we regulate and make our regulation known to the outside world. The process of receiving and using information is the process in which we adjust to the various contingencies in the external environment and live effectively in the environment. The needs and complexity of modern life place unprecedented demands on the information process, and our publishing houses, museums, scientific laboratories, universities, libraries, and textbooks have to meet the needs of the process or lose their purpose of existence. To live effectively is to have enough information to live. It follows that communication and control are as essential to one's inner life as they are to one's social life. The position of the study of communication problems in the history of science is neither trivial nor coincidental, smart interactive whiteboard ,temperature screening kiosk, nor unprecedented. Long before Newton, this kind of problem had become popular in physics, especially in the work of Fermat, huggens, and Leibnitz; all of them were interested in physics, and their interest was focused not on mechanics, but on optics, that is, on the transmission of visual images. Fermat advanced the study of optics with his principle of minimization, which States that light travels in the least amount of time over any sufficiently short interval of the optical path. Huygens developed a pioneering form of what is now called Huygens' principle, which States that as light travels outward from a source, it forms around the source something like a small sphere, which consists of secondary sources whose light travels in exactly the same way as the primary source. Leibniz, on the other hand, regards the whole world as a collection of entities called "monads", whose activities are mutual perception on the basis of the predetermined harmony arranged by God, and it is very clear that Leibniz considers this interaction mainly in optical terms. Apart from this perception, monads have no "windows", so that, according to Leibniz, all mechanical interactions are in fact only subtle inferences of optical interactions. In this aspect of Leibniz's philosophy, the author's preference for optics and information is everywhere shown. This preference is fully expressed in his two most fundamental ideas: the characteristica universalis, or universal scientific language, and the calculus ratiocinator, or calculus of logic. This calculus ratioci-nator, though not perfect at the time, was the direct ancestor of modern mathematical logic. Leibniz, who was dominated by the idea of communication, was in many ways the intellectual forerunner of the ideas in this book, because he was also interested in machine computation and automata. In this book, my views are far from Leibniz's, but the problems I discuss are really Leibniz's problems. Leibniz's computing machine was merely a manifestation of his interest in the language of computation, the calculus of reasoning, which, in his mind,temperature scanning kiosks, was merely a generalization of his idea of a whole artificial language. From this, we can see that even his computing machine, Leibniz's preference is mainly language and communication. hsdtouch.com