The
RS-232 serial cable that is used to connect computers and
terminals to modems are commonly called RS-232 cables; technically,
they confrom to the Electronics Industries Association (EIA) RS-232
standard.
The cable provides asynchronous communication capabilities, such
as hardware flow control, software flow control, and parity check.
It has been widely used for decades. Almost all gears, instruments
with digital control interface, and communications devices are equipped
with the RS-232 interface. The typical transmission speed of an
RS-232 connection is 9600 bps over a maximum distance of 15 meters.
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