I think It's a very simple keypad , no more than $1 we can build it , that's good idea. Using parallel port and only 1 IC without Power supply.
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Friday, March 20, 2009
Keypad Using Parallel Port
I think It's a very simple keypad , no more than $1 we can build it , that's good idea. Using parallel port and only 1 IC without Power supply.
[Read More]
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