15 Oct
2001
15 Oct
'01
3:46 a.m.
On October 15, Iggy Drougge wrote:
Am I the only one who finds it a bit perverse that
there are 74xxx standard
TTL circuits for such complex functions as ALUs? I thought that the way to go
would be to construct it out of simpler TTL circuits, such as all the 740x
gates, not buying it as a package. I suppose I'm not used to the concept of
single 74xxx circuits carrying out such complex tasks.
An ALU isn't that complex, really. Find a TTL databook and look at
the logic diagram of a '181. There's not that much to it.
More complex and less "generic" than a 7400 quad NAND gate, sure...
-Dave
--
Dave McGuire
Laurel, MD