(As an ancient and flexible communication method, serial communication is widely used in the communication between PCs and between PC and MCU. When it comes to serial communication programming, people often immediately think of C, assembly and other programming languages that support the bottom operation of the system better and a large series of cumbersome code. In fact, as long as we use the help of relevant ActiveX controls, even in VB, whose underlying operation has never been valued, we can realize serial communication, and even its implementation method is faster and more convenient than C and assembly. Next, the author will introduce the method of realizing serial communication in VB.)
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