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On Sun, 09 Oct 2005 06:32:46 GMT, "Kevin Aylward"
<see_website@xxxxxxxxxxxxx> wrote:
>John Fields wrote:
>> On Sat, 08 Oct 2005 16:23:23 GMT, "Kevin Aylward"
>> <see_website@xxxxxxxxxxxxx> wrote:
>>
>>> Pooh Bear wrote:
>>>> Rich Grise wrote:
>>>>
>>>>> On Tue, 04 Oct 2005 10:48:55 +0100, Pooh Bear wrote:
>>>>>> Patrick wrote:
>>>>>>
>>>>>>> Sounds good. What about digital inputs of other logic families,
>>>>>>> e.g. TTL? If I remember correctly TTL inputs draw a few
>>>>>>> micro-amps of current with a logic HIGH (5V) input.
>>>>>>
>>>>>> They draw a hell of a lot more when LOW.
>>>>>
>>>>> Actually, they're _sourcing_ current when low. ;-) ;-)
>>>>>
>>>
>>> Well, actually, no they are not. There are sinking electrons *into*
>>> the input!
>>
>> They're sourcing _conventional_ current, Kevin.
>>
>
>They can't. Conventional current is imaginary...
---
So's the square root of minus one, but that doesn't stop us from
using it.
Don't be an ass, Kevin. We all know that and we all use
conventional current every day.
--
John Fields
Professional Circuit Designer
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