[GreenKeys] ASR33 punch reader control line

[Jim Haynes]

On Mon, 6 May 2013, Lester Veenstra wrote:

> There should not be any need to "control" the tape reader other than using
> the lever switch on the reader itself.
>
Well DEC computers, for one, had a separate signal to control the tape
reader so the computer program could start and stop it.

Then of course there is the use of online control characters, the ASCII
device control characters used for X-on X-off Punch-on Punch-off.