[BBF Standards] Questions about functional composition, functional definition, data exchange

[Ralph Santos]

I'm sorry, I forgot to attach the diagrams I mentioned in my previous 
message.  Please find attached here "74LS00_circuitdiagram.png" and 
"74LS00_chipdiagram.png".

Apologies,
---ralf


Ralph Santos wrote:
> I have several questions about an earlier discussion thread, and I 
>   
[...material deleted...]
>  By way of analogy, consider the two attached 
> diagrams both describing NAND gates taken from the ON Semiconductor TTL 
> data book (shamelessly acquired from the following URL):
>
> http://ece-www.colorado.edu/~mcclurel/ON_Semiconductor_LSTTL_Data_DL121-D.pdf
>
> "74LS00_circuitdiagram.png" is a perfectly reasonable description of a 
> NAND gate describing its behavior in terms of discrete components, for 
> those who need to pay careful attention to the analog behavior of a 
> circuit using one of these gates. On the other hand, 
> "74LS00_chipdiagram.png" is a completely abstract description where the 
> "NAND" gate symbol (familiar to those who have studied digital design) 
>   

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