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数模转换器(DAC)用途很广,它不仅用在许多模数转换器(ADC)之中作为ADC的一个重要部件,而且还被用于许多仪器中,如各种数控图形发生器及作为各种模拟执行元件(如继电器或马达等)的驱动源。DAC本身原理的介绍不在本文范围之中。这里只简介DAC与μP的接口电路及相应的控制程序。一、8位DAC与μP之接口
Digital-to-Analog Converters (DACs) are versatile and are used not only as an ADC in many analog-to-digital converters (ADCs) but also in many instruments, such as various digitizers and as a Drive source for various analogue actuators such as relays or motors. The introduction of the principle of DAC itself is beyond the scope of this article. Here only describes the DAC and μP interface circuit and the corresponding control procedures. First, 8 DAC and μP interface