Am 19.05.2010 14:51, schrieb Invisible:

> Yes, that's the other fun thing. Depending on which type of gates you're
> using, they supply about 20 mA. But some of the LEDs I'm looking it draw
> 40 mA...

That's why normally you'd use an additional transistor to drive the LED 
(if you have multiple LEDs to drive you may want to use a transistor 
array in an IC package).

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