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本文介绍SDK—86单板微计算机通过它的可编程并行接口8255和A/D、D/A变换器接口的技术。文中介绍了接口的原理方法,给出了从A/D变换器采集数据的服务程序以及和D/A变换器连接用程序实现周期波形的方法。虽然本文是对INTEL-8086微处理机而言,但它的方法对大多数微处理机都是适用的。随着微处理机的广泛应用,微处理机与A/D、D/A的接口将受到一定的重视。
This article describes the SDK-86 single board microcomputer through its programmable parallel interface 8255 and A / D, D / A converter interface technology. This paper introduces the principle and method of the interface, gives the service program to collect data from the A / D converter and the method to realize the periodic waveform with the D / A converter connection program. Although this article is for the INTEL-8086 microprocessor, its method is suitable for most microprocessors. With the widespread use of microprocessors, microprocessors and A / D, D / A interface will receive some attention.