I'm looking to read the status of at least 25 buttons. I have read the 4051 tutorial and have one chip working successfully for 8 switches. I have each switch wired to the y0 - y7 with a 10K resistor and 5v with the other side. It's working great.
It looks like i can use the second example with two 4051's in an 8 * 8 matrix, but I'm not understanding how this one works. I'm only going to use digital inputs (switches).
Does anyone have an example of how to implement this one? Sorry if this is a newbie question.
Thanks in advance,