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VK2ZRG > DESIGN 22.03.06 09:44l 32 Lines 1132 Bytes #999 (0) @ WW
BID : 2254_VK2ZRG
Read: GUEST OE7FMI
Subj: Re: Logic gate IC question
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Sent: 060322/0626Z @:VK2WI.#SYD.NSW.AUS.OC #:9370 [SYDNEY] FBB7 $:2254_VK2ZRG
From: VK2ZRG@VK2WI.#SYD.NSW.AUS.OC
To : DESIGN@WW
VK2ZRG/TPK 1.83d Msg #:2254 Date:22-03-06 Time:6:25Z
Andy wrote in part :-
>
>I've never had to design anything using logic before in the real world,
>except only in theory.
>
>- Analogue Andy -
You mean you don't use logic when doing a spread sheet? Seriously,
I think you need a voltage comparator. If you read "Digital Basics" in
the ARRL Handbook, then you may be suitably enlightened on a few matters
logical. Or just read a few specs on a logic IC in a data book and you'll
get an idea of what they do and what input/output levels are required.
I've designed many logic circuits over the past 40 years. It's quite easy
just because the circuit operates according to logic. I've designed circuits
on paper, designed and made the PC board, assembled the components onto the
board, turned it on and found that the circuit worked perfectly as per the
paper design. Can't do that with analogue except for the simplest of circuits.
73s from Ralph VK2ZRG@VK2WI.#SYD.NSW.AUS.OC
/ack
Taglines by Colin Coker G4FCN
C Program run, C Program Crash...ReWrite in Pascal!
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