The course covers the system and design issues relevant to high-speed electrical (and optical, if time permits) signaling. We start with the basics of channel properties, modeling, measurements, and communications techniques. Circuit design of main components is covered in detail. The system design issues such as planning and budgeting are presented. A large portion of the class is devoted to case studies that include the multi-Gb/s serial and parallel chip-to-chip interfaces, Gigabit and 10-Gigabit Ethernet over copper, VDSL (and possibly 10Gig optical).