ummm,

i've noticed a couple of fighting games
have this neat feature on them

whenever you press the attack button
say 3 times in a certain amount of time(say, 2 seconds)

the character does 3 different chaining moves (AKA the Combo)

how is that?

do you key in a timer that says if key was pressed 3 times in
2 secs, do this?

or is there a more, possible way?

tank a bunch!