A computer network is to send information from one Designed to another point. This information needs to be converted to a digital signal or police hoặc analog signal for transmission. In this chapter, the first choice chúng Discuss, conversion to digital signals; in Chapter 5, the second choice chúng Discuss, conversion to analog signals. Advantages and Disadvantages We Discussed the transmission of digital over analog transmission in Chapter 3. In this chapter, show the schemes and TECHNIQUES chúng chúng use to transmit data có digitally. First, chúng digital-to-digital Discuss conversion tech- niques, methods to convert digital data to digital mà signals. Second, analog- to-digital chúng conversion Discuss Techniques, an analog signal change mà methods to a Digital Signal Finally, chúng Discuss transmission modes.
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