On 24 Dec 2008 at 10:44, Brent Hilpert wrote:
Earliest real refs I have are in the 1965 TI and 1966 Fairchild catalogs, both
list JK flip-flop ICs.
They both list JK types in the early RTL families, amongst others.
Indeed, my first experiences with building with RTL digital ICs were
with 923 JK flip-flops. Those were the heady days of a half-adder
being about the most you could find in a package. Early MOS ICs also
featured T flip-flops, I seem to recall.
Cheers,
Chuck