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Integrated circuit

阅读:220发布:2023-11-29

专利汇可以提供Integrated circuit专利检索,专利查询,专利分析的服务。并且PURPOSE: To test independently the respective integrated circuits mounted in the card and simply judge the condition of the card by providing a change-over circuit of the input and the output terminals for the integrated circuit portion.
CONSTITUTION: In accordance with the logic level 0 of the test mode signal impressed to the change-over terminal 301 of the integrated circuit 300, the inputs of the test input terminals 302W305 impressed to AND gates 312W315 of the input change-over circuit 310 are applied to the integrated circuit 320 and the output from the circuit portion 320 passes through the AND gates 342W345 of the output change-over circuit 330 and are taken out from the test output terminals 332W335. When the level of the terminal 301 is 1, the gates 316W319 and 346W349 are valid, and the signals of the input terminals 306W309 are taken out to the output terminals 336W339 through the circuit portion 320.
COPYRIGHT: (C)1980,JPO&Japio,下面是Integrated circuit专利的具体信息内容。

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