Jim Thompson <
[email protected]> responded to a deperate
crosspost initiated by (e-mail address removed) (kpk) involving:
comp.lang.vhdl,
comp.arch.arithmetic,
comp.arch.fpga,
sci.electronics.design, and
comp.lang.verilog thusly:
An honest request for the answer to a homework assignment - I don't
think I've ever seen this before!
He learns, at a low level, how to cheat the system. Of course if
there's anywhere that the phrase "you're only cheating yourself"
totally applies, it's in school.
Perhaps it reinforces the concept that you can build any logic
device out of a sufficient number of NAND (or NOR) gates?
That's surely true of some professors, but how can you tell that
just from what the OP said?
As Jim said, it's not a big deal at all. Would you rather use
LM339's?
You can't? Sheeeesh! I'm an analog designer and I can. Ever heard
of master-slave. Takes 9 2-in-nands (one used as an inverter) to make
a D-flop.
I don't know if I'd have the patience to spend three minutes doing
it when I know I could get a schematic that I could easily convert to
all-NAND-all-the-time off a (don't tell the OP) "d-a-t-a s-h-e-e-t" in
less time than that.
Bonus question(s): How many 74(xxx)00's (quad nand gate) does it
take to make the 4-bit divider using Jim's solution, and why is "12"
an incorrect answer?