建立内部通信协议，设计出基于此协议的硬件解码电路。
Establish internal communication agreement, devise the hardware decode circuit based on this agreement.
设计内部天线所面临的一个挑战是与无线通信设备内部其它部件及电路的干扰。
One challenge faced while designing an internal antenna is the interference with other components and circuits inside the wireless communication device.
全部电路由硬件描述语言实现，可以集成在一片CPLD或FPGA芯片内部，用于数字通信系统接收端的帧同步和定时。
All circuits are designed by HDL and can be intergrated in one CPLD or FPGA chip, used in the frame synchronization and timing of digital communications receiver.
铁路交通信息系统PDA为了使内部信息具有实时性，在系统内部增加传呼接收电路，从而可以实时更新铁路、民航交通信息。
The receiving circuit of the pager is applied in the PDA (Personal Digital Assistant) of the railway communication information system so that the information in the system can be refreshed.
铁路交通信息系统PDA为了使内部信息具有实时性，在系统内部增加传呼接收电路，从而可以实时更新铁路、民航交通信息。
The receiving circuit of the pager is applied in the PDA (Personal Digital Assistant) of the railway communication information system so that the information in the system can be refreshed.
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