什么叫模拟信号？什么叫数字信号（国外英文资料）.docVIP

什么叫模拟信号？什么叫数字信号（国外英文资料） What is the analog signal? What is a digital signal? Whats the difference? Number of views: 25,538 reward points: 10 | resolution: 2005-10-30 00:37 | : zhenghanxxx What is the analog signal? What is a digital signal? Whats the difference? Best answer simulation Data (Analog Data) is made by sensors to collect the value of the continuous variation such as temperature, pressure, and in the telephone, radio and television broadcasting in the sound and image. Digital Data (Digital Data) is simulated Data after quantifying the discrete values, such as using binary code in your computer characters, graphics, audio and video Data. At present, the ASCII American Standard Code for Information Interchange (American Standard Code for Information Interchange) for ISO international organization for standardization and CCITT adopted by the international telegraph and telephone consultative committee, become the international general Standard Code for Information Interchange, using seven binary number to represent a English letters, Numbers, symbols, punctuation, or control; The graphics, audio and video data can be in multiple encoding formats. Analog signals and digital signals (1) analog signals and digital signals Different data must be converted to the corresponding Signal can be transmitted: Analog data usually use Analog signals (Analog Signal), for example with a series of continuous variation of the electromagnetic wave (such as the electromagnetic wave in a radio and television broadcasting, or voltage signals (such as telephone transmission of audio Signal voltage) to represent; Digital data, adopting Digital Signal (Digital Signal), for example with a series of discontinuous change voltage pulse (such as we are available to a constant voltage said binary number 1, with a constant negative voltage said binary number 0), or light pulses. The electromagnetic wave itself is both the signal carrier and the transmission medium when the analog signal