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Super secret code lock circuit

2017-01-07 22:38  
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Super secret code lock circuit
The super secret code lock circuit is as shown. This circuit is composed of the decimal counter CD4017's ten output ports, and the password group number is more than 100 million, so this lock can be called super-lock, the circuit is as shown. This circuit is simple, and is composed of a CD4017, 10 password input switches and other circuits. Figure: Super secret code lock circuit