Lab 9 and 10: The Bounce Measure

http://www.beyond-circuits.com/wordpress/tutorial/tutorial10/

I got some debounce information as fololow

P0		P1
HEX	DEC (clock period)	HEX	DEC (clock period)
000045	69	000005	5
005024	20516	002A63	10851
000755	1877	00282A	1028
000049	73	003DCF	1582
00001F	31	0025D6	9686
0006DC	1756	000C61	3169

P0(max) = 20516 clock = 0.2ms

P1(max) = 10851 clock = 0.1ms

My thought:

• 10(ms) is a good choice because P0 and P1 likely is much smaller than 10(ms), or the probability of P0, or P1 > 10(ms) is almost zero. In addition I can push the button as fast a 1 push/1sec >> 10(ms). Conclusion 10(ms) is too safe, I think 2(ms) is OK!
• I don’t know: Does the button bounce more often when it is pressed or released?