范文编号:TX378 范文字数:12191,页数:46 摘要 随着通信行业的不断发展,调制解调器已成为人们生活中重要的一员,调制解调器的产生较早,发展到今天经历了由非智能到智能、由低速到高速、由模拟到数字由单一的数据通讯到数据/图像、语音通讯的变化阶段,可以说当今的调制解调器是诸多高科技技术的结晶。 关键词:频移键控,调制,解调,AT89S51,串口通信 ABSTRACT With the continuous development of the telecommunications industry, Modem has become an important part of people's live. Modem have earlier experienced the development of non-smart to smart, from low to high-speed, from analog to digital data communication from a single data / image, voice communications, phase change, it can be said a lot of today's modem is a high crystallization technology. Keywords: frequency-shift keying, modulation, demodulation, AT89S51 serial communication 摘要 I
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