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NTE Electronics Circuit: Simple Electronic Code Lock Simple Electronic Circuits, Electronic Circuit Projects, Basic Electrical Engineering, Electronic Engineering, Simple Electronics, Electronics Projects, Electrical Wiring Colours, Arduino Projects Diy, Electronic Schematics
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Simple Electronic Code Lock

The circuit diagram of a simple electronic code lock is shown in figure. A 9-digit code number is used to operate the code lock.When power supply to the circuit is turned on, a ... 
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