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Digital code lock 2011-06-16

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3lectrix

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3lectrix submitted a new article:

Digital Code Lock - This is a simple but effective code lock circuit that has an automatic reset facility. The circuit

This is a simple but effective code lock circuit that has an automatic reset facility. The circuit is made around the dual flip-flop IC CD4013.Two CD 4013 ICs are used here. Push button switches are used for entering the code number. One side of all the push button switches are connected to +12V DC. The remaining end of push buttons 2,3,6,8 is connected to clock input pins of the filp-flops. The remaining end of other push button switches are shorted and connected to the set pin of the...
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