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8051 8051 based Door bell 1.0

AT89S51 used to achieve the ding dong sound for your doorbell.

  1. sajivjess
    AT89S51 based ding dong sound for your doorbell. The code is written in assembly language. When you press the switch a ding dong bell sound is generated from port P1.0. LM386 is used as an audio amplifier.

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    Circuit diagram