21 Nov
2014
21 Nov
'14
1:26 p.m.
On Fri, Nov 21, 2014 at 3:18 PM, Dale H. Cook <radiotest at juno.com> wrote:
At 02:58 PM 11/21/2014, drlegendre wrote:
Yep - got it.
I have virtually no idea what any of that means.
=/
The 20 mA current interface was the standard current loop interface for
Teletypes such as the ASR-33 sometimes used as consoles for DEC minis.