Grumpy_Mike:
I don't think he is. What that circuit is designed to do is to detect how many buttons are being held down at one time. He said As I read that there is only one tone being generated at any one time.
I think you're right GM. I mis-interpreted when I saw the "pushing together 2 or more buttons" and "new frequencies"..... and 'piano'.
Is it more like a 5 finger type writer .... those ones where the user learns all the key combinations through training.... to generate their desired character?.....in this case ...a single note...so a person with 5 fingers could play 1 of 32 different notes?