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随着电子和计算机技术的飞速发展,信号的传输也逐渐从模拟信号的传输过渡到了数字信号的传输时代。数字通信抗干扰能力强,无噪声积累;便于加密处理、存储、处理和交换;设备便于集成化、微型化等优点,数字通信正在成为一种高速发展的新兴通讯手段。
With the rapid development of electronics and computer technology, signal transmission has gradually shifted from the transmission of analog signals to the transmission of digital signals. Digital communication has strong anti-interference ability and no noise accumulation; it is easy to encrypt, store, process and exchange; and the equipment is easy to integrate and miniaturize. Digital communication is becoming a new and rapid communication means.