前端设备：一种把一些通信线路与计算机系统联接起来的传输控制单元。

Front-end device: a transmission control unit that links a number of communication lines to a computer system.

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针对传统无线通信是单向传输的局限问题，设计了基于nRF 905射频芯片的双向通信系统并以单片机为主控制单元。

Based on the traditional wireless communications limited transmissions is limited, based on the NRF905 rf chip design of two-way communication system and MCU control unit mainly.

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为了实现车载导航仪和发动机ecu(电子控制单元)的通信，提出了一种方案。

In order to achieve communication between vehicle navigator and engine ECU (Electronic Control Unit), a programme is proposed.

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