智能卡是一種集成電路卡（IC card），以電子貨幣形式流通于市場，也可用作身份證明或健康卡。它繼承了磁卡以及其他IC卡的所有優點，并有極高的安全、保密、防偽能力。本書對三種IC卡（存儲器卡、邏輯加密卡和智能卡）和磁卡的物理結構、邏輯特性、實現技術和應用系統等進行了較為全面的論述，較詳細地闡明了有關的國際標準、安全保密體制和讀寫設備（讀卡器）等，并以自動柜員機ATM和銷售點終端POS為重點介紹了卡的應用技術和應用系統。
標簽： 智能卡技術
上傳時間： 2013-11-19
上傳用戶：蟲蟲蟲蟲蟲蟲
This example provides a description of how to use the USART with hardware flowcontrol and communicate with the Hyperterminal.First, the USART2 sends the TxBuffer to the hyperterminal and still waiting fora string from the hyperterminal that you must enter which must end by '\r'character (keypad ENTER button). Each byte received is retransmitted to theHyperterminal. The string that you have entered is stored in the RxBuffer array. The receivebuffer have a RxBufferSize bytes as maximum. The USART2 is configured as follow: - BaudRate = 115200 baud - Word Length = 8 Bits - One Stop Bit - No parity - Hardware flow control enabled (RTS and CTS signals) - Receive and transmit enabled - USART Clock disabled - USART CPOL: Clock is active low - USART CPHA: Data is captured on the second edge - USART LastBit: The clock pulse of the last data bit is not output to the SCLK pin
上傳時間： 2013-10-31
上傳用戶：yy_cn
This example shows how to update at regulate period the WWDG counter using theEarly Wakeup interrupt (EWI). The WWDG timeout is set to 262ms, refresh window set to 41h and the EWI isenabled. When the WWDG counter reaches 40h the EWI is generated and in the WWDGISR the counter is refreshed to prevent a WWDG reset and led connected to PC.07is toggled.The EXTI line9 is connected to PB.09 pin and configured to generate an interrupton falling edge.In the NVIC, EXTI line9 to 5 interrupt vector is enabled with priority equal to 0and the WWDG interrupt vector is enabled with priority equal to 1 (EXTI IT > WWDG IT). The EXTI Line9 will be used to simulate a software failure: once the EXTI line9event occurs (by pressing Key push-button on EVAL board) the correspondent interruptis served, in the ISR the led connected to PC.07 is turned off and the EXTI line9pending bit is not cleared. So the CPU will execute indefinitely EXTI line9 ISR andthe WWDG ISR will never be entered(WWDG counter not updated). As result, when theWWDG counter falls to 3Fh the WWDG reset occurs.If the EXTI line9 event don抰 occurs the WWDG counter is indefinitely refreshed inthe WWDG ISR which prevent from WWDG reset. If the WWDG reset is generated, after resuming from reset a led connected to PC.06is turned on. In this example the system is clocked by the HSE(8MHz).
上傳時間： 2013-11-11
上傳用戶：gundamwzc
protues的英文對照
上傳時間： 2013-11-20
上傳用戶：lyson
不懂英文人用
上傳時間： 2014-03-28
上傳用戶：manlian
555定時器
上傳時間： 2013-10-21
上傳用戶：Amygdala
protues的英文對照
上傳時間： 2013-10-13
上傳用戶：playboys0
不懂英文人用
上傳時間： 2013-10-18
上傳用戶：fac1003
555定時器
上傳時間： 2013-11-12
上傳用戶：sc965382896
protues元件庫標識 protues元件庫 元件名稱及中英對照
上傳時間： 2013-10-11
上傳用戶：909000580
