Digilent 410-274P-KIT - Manual (Page 18)

Nexys4™ FPGA Board Reference Manual
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Page 18 of 29
The sixteen individual high-efficiency LEDs are anode-connected to the FPGA via 330-ohm resistors, so they will
turn on when a logic high voltage is applied to their respective I/O pin. Additional LEDs that are not user-accessible
indicate power-on, FPGA programming status, and USB and Ethernet port status.
9.1 Seven-Segment Display
The Nexys4 board contains two four-digit common anode seven-segment LED displays, configured to behave like a
single eight-digit display. Each of the eight digits is composed of seven segments arranged in a “figure 8” pattern,
with an LED embedded in each segment. Segment LEDs can be individually illuminated, so any one of 128 patterns
Figure 16. General Purpose I/O devices on the Nexys4