PC Hardware in a Nutshell, 3rd Edition [Electronic resources] نسخه متنی

Chapter 22. Serial Communications

Despite the increasing popularity
of USB, serial communications remain important to many PC users. PCs
use serial communications to connect peripherals such as mice,
modems, PDA cradles, barcode readers, and similar low-speed devices.
In one sense, serial communications are straightforward. If you use
the right cable and let Windows or Linux take care of configuring
parameters, everything usually just works. When it
doesn't, however, you need to understand quite a bit
about the underlying plumbing to make things right. This chapter
describes what you need to know about PC serial communications.