On 5/11/2010 4:37 PM, Orchid XP v8 wrote:

>
> The nice thing about relays is that they're (usually) double-throw. That
> means you need fewer relays than you would, say, transistors.
>

Yep. Surprisingly easy to construct AND, OR and even XOR gates with 
relays. ;)

-- 
~Mike

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