The PC interface
The interface to the PC could be using either a standard serial
interface such as USB (covered later in this book [93–95]) or
using a direct interface to an HDD.
The HDD interface offers a different challenge to the RAM
memory interface discussed previously. There are numerous stan-
dards for interfacing to HDDs including the major two in current
use IDE/AT (Intelligent Drive Electronics/Advanced Technology)
and SCSI (Small Computers System Interface). SCSI is commonly
used for high-speed drives and has been historically used exten-
sively in Unix-based systems. SCSI is a generic systems interface,
and therefore it allows almost ANY type ...