求翻译：该系统下位机以51单片机为微处理器，用按键作人机交互输入，LED灯显示作输出，以实现下位机（病房）向上位机（监护台）传输呼叫，同时上位机（监护台）用VB编写的软件对下位机的通信信息作出处理，并可以向下位机发送指令。此系统能够为医院提供一个成本低、效率高、操作方便和易于安装维护的呼叫系统，具有较高的实际应用价值！是什么意思？

Bit machine with 51 single-chip microprocessors, human-computer interaction with buttons for input, led light display for output to the machine (wards) the upper machine (guardianship Taiwan) transfer calls, while the host computer (Guardianship Taiwan) vb software written on the next machine commun

Under this system in 51 Bit machine for single-chip microprocessor, the key to human-machine interaction, enter LED light display as the output, in order to achieve the next level down (wards) monitor up bit machine (Taiwan) transferring the call, at the same time the monitor desk) ( VB with softwar

This system lower position machine take 51 monolithic integrated circuits as a microprocessor, makes the man-machine interaction input with the pressed key, the LED lamp demonstrated makes the output, realizes the lower position machine (hospital ward) the upward position machine (guardianship Taiwa

Slave to the system of 51 single-chip microprocessor, press for interactive input, LED light displays for output to achieve lower computer (ward) to the PC (monitor) to transfer calls, while PC (monitor) with software written in VB for slave communication of information processing, and sent down ins