ODF第一排 1 2 3 4 5 6 7 8 9 10 11 12 144芯光缆 1 2 3 4 5 6 7 8 9 10 11 12 房间号 ODF第二排 1 2 3 4 5 6 7 8 9 10 11 12 144芯光缆 13 14 15 16 17 18 19 20 21 22 23 24 房间号 ODF第三排 1 2 3 4 5 6 7 8 9 10 11 12 144芯光缆 25 26 27 28 29 30 31 32 33 34 35 36 房间号 ODF第四排 1 2 3 4 5 6 7 8 9 10 11 12 144芯光缆 37 38 39 40 41 42 43 44 45 46 47 48 房间号 ODF第五排 1 2 3 4 5 6 7 8 9 10 11 12 144芯光缆 49 50 51 52 53 54 55 56 57 58 59 60 房间号 ODF第
There are 27 user-controllable LEDs on the DE2-70 board. Eighteen red LEDs are situated above the 18 toggle switches, and eight green LEDs are found above the pushbutton switches (the 9th green LED is in the middle of the 7-segment displays). Each LED is driven directly by a pin on the Cyclone II FPGA; driving its associated pin to a high logic level turns the LED on, and driving the pin low t