Keypad Controlled Switch No2 circuit


Posted on Feb 5, 2014

This is a simplified version of the 4-Digit Keypad Controlled Switch. I have modified the design to reduce the complexity of the circuit - and the number of components required. As a result - the code is somewhat less secure. However, there should be lots of situations where it will still be adequate..


Keypad Controlled Switch No2 circuit
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