This requires that the graphics interface language provide facilities for a program to determine the hardware characteristics of the device and make appropriate adjustments.

这要求图形界面语言为程序提供确定设备的硬件特征和做适当的矫正的方便性。

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The system utilizes data-chosen-switches, microprocessor AT89C51 and complex logic device (CPLD). The software program is written by C language and VHDL language, respectively.

该系统数字部分主要利用拨码开关、单片机AT89C51，复杂可编程逻辑器件进行设计。

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