题目内容
______ materials compose of multiple ordered regions, which are separated from one another by grain boundaries.
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In 1958, Dr. Jack Kilby of Texas instruments company invented the first integrated circuit, including 12 devices on Ge. ( )
The first CPU was Intel's 4004 microprocessor in 1971. ( )
Based on the external environment has a significant influence on the conductivity of the semiconductor, various devices including ( ) can be applied.
Moore’s law: the level of integration and memory capacity of integrated circuits doubles every ( ) months on average.
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