[sdiy] Trigger To Gate Circuit

[Ian Fritz]

At 12:31 PM 6/7/2008, Roy J. Tellason wrote:

>A trigger says "a key has just been pressed" while a gate says "a key has 
>been
>pressed here" _and_ "the key was released here" -- how are you gonna derive
>that second bit of info from a trigger?  Pick some arbitrary time period?
>
>Or am I missing something here?

Well, one thing you need to keep in mind is that many folks don't use 
keyboards.  :-)

Fixed width pulses are generally useful as gate signals in that context.

Ian