联合国在日内瓦公布的《1999年度人类发展报告》称,科学技术的飞速进步使得全球许多人的生活质量有了很大的提高,但与此同时,世界上的贫富悬殊差距越拉越大。 就拿目前出现频率很高的“数字化”来说,它将传统的语言模拟信息和图像,模拟信息转化为数字信息。从技术角度看,它抗干扰能力强,传输距离远、信息保 According to the 1999 Human Development Report released by the United Nations in Geneva, the rapid progress of science and technology has greatly improved the quality of life of many people around the world. At the same time, however, the disparity between the rich and the poor in the world has widened. Take the current “digital” high frequency, it will be the traditional language simulation information and images, analog information into digital information. From a technical point of view, it is strong anti-interference ability, transmission distance, information security