Re: Questions:

[wbaguhn@nyx10.cs.du.edu (Will Baguhn)]

In article <Pine.A32.3.93.960429121505.34424A-100000@freenet4.afn.org>,
Don Pattee Jr  <afn40469@afn.org> wrote:
>Grumble. TTL level. Grumble. Mumble. Damn annunciators. 
>(The GS Hardware reference manual says that the annunciators cn be used to
>directly drive an LED. LEDs generally require 2volts to start up...)
>
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mm-hmm... used to drive LEDs with the annunciators on my old II+ clone.
but... an LED takes practically no power to drive it.  i THINK that there's
5V there, but you shouldn't attach as much current draw as the control side of
a relay there.  thus sayeth the hardware reference: "When driving a device
with the annunciator outputs, be sure not to load any one output with
more than one standard TTL load." (p166, "Warning")