1.了解D/A转换的基本原理。 2.了解D/A转换芯片0832的性能及编程方法。 3.了解8088/86CPU系统中扩展D/A转换的基本方法。 -1. Understand the D/A conversion of the basic principles. 2. Understand the D/A conversion chip 0832 performance and programming methods. 3. 8088/86CPU system to expand