| 摘要 |
The wireless key with memorized acknowledgement is used on the key to lock or unlock the door or switch. The key is composed of two display, an antenna, t wo push button, a case and an embedded microcontroller, which is embedded a transceiver, controller, memory and DES encryption /decryption. After you push the button on the key to lock the door, the lock status(locked/unlocked) need to be transmitte d back to the key to be memorized for indication. When the user forgets if he/she lock s the door, he/she will press the "lock" or "unlock" button, the status stored on the memory will be displayed by the LED. If more keys are used, and they are nearby, they will synchronize each other , and update the memory to display the latest status of the lock.
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