Serial ports and serial devices are one of the most important concepts of an embedded computer but tons of other peripherals exist. You should try to modify the preceding example programs in order to fit your needs, or you can go directly to the next sections, where we'll introduce you to some new devices.

In the next chapter, we will take a look at the Universal Serial Bus (USB) that allows people to connect several kinds of electronic devices to a computer through the same port: for instance, a hard disk, a keyboard, or a serial device, as seen in this chapter.