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数模转换器DAC的功能是将一个数字量转化为一个模拟电压、电流值。它为微机系统的数字信号与外部环境的模拟信号之间提供了一种接口,从而广泛应用在数据采集与模拟输入输出系统中。
The function of digital-to-analog converter DAC is to convert a digital quantity into an analog voltage and current value. It provides an interface between the digital signal of the microcomputer system and the analog signal of the external environment, so it is widely used in the data acquisition and analog input and output system.