GTCO Super L III - Users Guide - Manual (Page 39)

Super L III 39
Your computer may have a 25-pin RS-232C
connector, rather than a 9-pin connector. If so,
use the 9- to 25-pin adapter supplied with Super L
III. This figure shows how this adapter is wired
internally.
Flow Control
Flow control is the process of regulating the traffic or flow of data between two RS-232C
devices. Flow control prevents the transmission and subsequent loss of data if the receiver
is not ready to accept it. Examples of devices that use flow control are: a printer to signal
buffer full; a modem to indicate carrier detect and a time-shared computer that services
multiple users on a time-available basis.