With the development of the computer and mobile technology, no matter the instrumentation or computer, their interface are going to become more and more simple and current. Particularly in the area of the interface, the USB interface is rapidly becoming one of the most popular interfaces in the computer because of its simple configuration and fast speed. The traditional intelligent devices usually use the serial or parallel to communicate with others. However, in current market, the PC interface is becoming more and more simplify. There is almost no serial or parallel on the laptops. Some desktops are also reducing their interfaces. So the spreading of the traditional intelligent instrumentation is or will be in trouble because of its interface. This paper offers the way of the MCU sending the data into flash memory and saving data and the MCU communicate with the PC using an interface chip. This design can shack off the trouble of variety of interfaces. So it has universal relevance and applied value.
Keywords:USB interface, intelligent instrumentation, communication interface