2 Dec
2012
2 Dec
'12
9:13 p.m.
On 12/01/2012 02:58 PM, Fred Cisin wrote:
Not RS232, but clearly related, I am _still_ trying to find any technical
information on the ACU (Automatic Calling Unit) used in the early 1970s
which ahd, I believe, an RS366 interface. No, I don;t ahev the unit, if I
did, I suspect it would all be very obvious...
-tony
On Sat, 1 Dec 2012, Chuck Guzis wrote:
Perhaps, but quite likely only in the 9-line IBM asynchronous variant.
Bell 209 modems will be but a faint memory, lost in the mists of time. I hadn't realized that RS232 was a
"protocol", just a set of signal,
level and connector specifications.
soon to become a cult?