C H A P T E R 11
Serial Port Drivers
A serial port provides a basic communications interface for the purpose of getting low bandwidth data into and out of a computer. Although modern interfaces such as USB and FireWire have replaced many applications in which the traditional serial port was once used, the serial port driver is still well supported in modern day operating systems, including Mac OS X, despite the fact that Apple has not released hardware with a built-in serial port for over a decade.
There are several reasons for the longevity of the serial port. First, a serial port is simple and inexpensive to implement in hardware, making it a popular choice for hobbyists who are adding computer communications to their electronic projects. ...
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