Intelligent key apparatus equipped with sounding device
A technology of intelligent key equipment and sounding device, which is applied in the field of information security, can solve problems such as insecurity, and achieve the effects of strengthening brand promotion, increasing security, and making equipment more humanized
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[0036] The present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments.
[0037] The sound generating device in the present invention can adopt various forms, and can be various sounds, such as: voice prompt, music or ringtone, etc., and the sound generating device can be selected from a loudspeaker or a buzzer.
[0038] When using a voice chip, if the voice content does not need to be modified after writing, you can consider using OTP type (one-time programming) voice circuit and mask type voice circuit; if the voice content needs to be modified frequently, you should use ISD series or APR series Voice recording and playback circuit. The voice chip and the microcontroller communicate through a serial communication interface (SPI or Microwire).
[0039] When the buzzer is used, the buzzer is divided into two types: piezoelectric and electromagnetic, which can be selected according to different needs. The buz...
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