Can't figure how to debounce this

PaulS:
int? To hold HIGH or LOW?

That's how tutorial do it
http://arduino.cc/en/Tutorial/Debounce

Grumpy_Mike:
The inputs on the buttons A to H should all have a pull up resistor on them, that is from the input pin to +5V, make them about 4K7 although this is not critical and can be anywhere between 1K and 10K

Ok will try it that way then
BTW, what does the "7" mean in "4K7"?

CrossRoads:
10K to +5V.

Grumpy_Mike:
VCC on the chip should be wired directly to 5V not through a 10K resistor.

So, it's direct to 5V or through a 10K ressistor?