UNIX has always had support for serial communications. In fact, the very first UNIX machines relied on serial lines for user input and output. Things have changed a lot from the days when the average ``terminal'' consisted of a 10-character-per-second serial printer and a keyboard. This chapter will cover some of the ways in which FreeBSD uses serial communications.
For questions about FreeBSD, e-mail
<questions@FreeBSD.org>.
For questions about this documentation, e-mail <doc@FreeBSD.org>.