23 Dec
2008
23 Dec
'08
8:20 p.m.
Roy J. Tellason wrote:
> On Monday 22 December 2008 04:07:10 am Mike Hatch wrote:
>>> A simple example of the differnce. If you take a D-type flip-flop and
>>> connect the output to a NOT gate and the output of that back to the D
>>> input, then you get a divide-by-2-circuit. Feed in a regular clock
>>> at one
>>> frequency and the Q output will toggle at half that frequency. But
>>> if you
>> A clocked JK with the JK held high will perform the same function.
>
> As will tying the D input back to not-Q, which most of them have.
> The advantage to using the D-type over the J-K is two fewer package
> pins needed, which may or may not be important to somebody.
>
> And what the heck does that J-K stand for, anyway?
John Kardash invented the JK flip flop. At least, that is what the prof said back in 1982
when I was at school.