FPGA实现IIC驱动环境光、距离传感器，按键切换显示环境光、距离数据，数据通过数码管显示
Circuits.Sequential Logic.Counters + Shift Registers
Circuits.Sequential Logic.Latches and Flip-Flops
Circuits.Combinational Logic.Karnaugh Map to Circuit
Circuits.Combinational Logic.Multiplexers + Arithmetic Circuits