This paper introduces the problems and opportunities of English language learning in the period of high development of computer technology, and highlights the importance of English language ability. After comparing with the traditional English language ability learning, the author draws many advantages of multimedia computer aided English language learning, and draws relevant conclusions.
In order to modify present simulation and test system of DT-100 Short-wave Radio’s Power Amplifier, a kind of automatic test system for short wave radio’s power amplifier is designed here in which virtual instruments and MCU technology are used. Compared with the earlier systems, the new test system avoids many weaknesses, such as complicated simulation test, tedious testing process, and huge manual calculations and has merits of simple operation and accurate assessment all of which provide a better way for existing testing system.
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