how can i make two LEDs light on alternately?

[Michael Wong]

hello .
i have a problem to make two LEDs light on alternately . i have one signal
input to a CASE that have may state on two LEDs..such as one case is one
LED on and other one is OFF.But one of my problem is one of my case is about
TWO LEDs need to light on alternately mode,what the way can do it ?please

[Helmut Hullen]

Hallo, Michael,

Du meintest am 15.12.99 zum Thema how can i make two LEDs light on alternately?:

> i have a problem to make two LEDs light on alternately . i have
> one signal input to a CASE that have may state on two LEDs..such as
> one case is one LED on and other one is OFF.But one of my problem
> is one of my case is about TWO LEDs need to light on alternately
> mode,what the way can do it ?please

Could you please list all the cases which you want to show? Could you list
them in a table?

Viele Gruesse!
Helmut

[Phil N]

Maybe I don't understand exactly your problem, but a very easy solution is to
use one control plugged directly to one led, and to the other by a NOT boolean
function.

Philippe Nobert

Michael Wong a écrit:

> hello .
> i have a problem to make two LEDs light on alternately . i have one signal
> input to a CASE that have may state on two LEDs..such as one case is one
> LED on and other one is OFF.But one of my problem is one of my case is about
> TWO LEDs need to light on alternately mode,what the way can do it ?please