The front-end device and protocol handlers make that possible.

前端设备和协议处理程序使其成为可能。

youdao

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

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。

youdao

The big goal is to push all the heavy back-end work forward to front-line workers, often as a "dashboard" on a handheld device.

WSJ: Data Analytics: So, What's Your Algorithm?