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In order to understand the cement soil compaction characteristic, through indoor compaction test methods, study on the different amount of cement soil in dry and wet compaction test. The results showed that in the standard compaction power, the optimum moisture content and the maximum dry density of cement soil present a certain regularity with different cement quantity. When the cement quantity and...
In this paper, the security of the flash disk is analyzed, the working principal and operation commands of the flash memory K9F5608U0B are studied, and a hardware protection technique scheme of flash disk based on the user qualification authentication, data encryption and decryption is put forward. User qualification authentication module applies the P89C51X2's UART transmitting mode to transmit the...
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