It replaced traditional operating to the wired broadcasting.
介绍了一种自行设计的采用十进制计数 /脉冲分配器 CC4 0 17芯片制作的有线广播播出的自动控制器 ,代替了传统的人工操作 。
With the development of cable and wireless communications and through the comparison of the two transmission technology, this paper focuses on their relationship in the evolution of technology, and then through the graphical chart, illus trates the replacement of fixed-line voice services by mobile voice services, including their fierce competitions.
文中通过有线通信和无线通信的发展历程,对比两种传输技术的特点,着重体现两者在各自技术演进中的相互关系。