通訊工程方面的文獻(xiàn)翻譯(文件)
【正文】 th all electronic circuits. Noise is defined[1] as unwanted disturbances superposed on a useful signal that tend to obscure its information content. Noise is not the same as signal distortion caused by a circuit. Electronics theory Main article: Mathematical methods in electronics Mathematical methods are integral to the study of electronics. To bee proficient in electronics it is also necessary to bee proficient in the mathematics of circuit analysis. Circuit analysis is the study of methods of solving generally linear systems for unknown variables such as the voltage at a certain node or the current though a certain branch of a work. A mon analytical tool for this is the SPICE circuit simulator. Also important to electronics is the study and understanding of electromagic field theory. Electronic test equipment Main article: Electronic test equipment Electronic test equipment is used to create stimulus signals and capture responses from electronic Devices Under Test (DUTs). In this way, the proper operation of the DUT can be proven or faults in the device can be traced and repaired. Practical electronics engineering and assembly requires the use of many different kinds of electronic test equipment ranging from the very simple and inexpensive (such as a test light consisting of just a light bulb and a test lead) to extremely plex and sophisticated such as Automatic Test Equipment. Computer aided design (CAD) Main article: Electronic design automation Today39。譯文： Electronics is the study of the flow of charge through various materials and devices such as semiconductors, resistors, inductors, capacitors, nanostructures and vacuum tubes. Although considered to be a theoretical branch of physics, the design and construction of electronic circuits to solve practical problems is an essential technique in the fields of electronic engineering and puter engineering. This science starts about 1908 with the invention by Dr Lee De Forest of the valve (triode) Before 1950 this science was named Radio or Radio technics because that was its principal application. The study of new semiconductor devices and surrounding technology is sometimes considered a branch of physics. This article focuses on engineering aspects of electronics. Electronic systems are used to perform a wide variety of tasks. The main uses of electronic circuits are: The controlling and processing of data. The conversion to/from and distribution of electric power. Both these applications involve the creation and/or detection of electromag
畢業(yè)設(shè)計相關(guān)推薦
鄂ICP備17016276號-1