《数字电》英文版 chapter3-1 Combinational logic Circuits

BCD to seven-segment Decoder ■ active low 0 0 DCBA 1 d 0 0 d 74xx47 a Anode seven-segment LED displa

D C B A a b c d e f g BCD to seven-segment Decoder g c b a d e F ◼ Anode seven-segment LED display ◼ active low 0 0 1 1 1 1 1 1 0 0 1 74xxx47

BCD to seven-segment Decoder active high 0011 DCBA abcde 0000110 d Cathode seven-segment led display

D C B A a b c d e f g BCD to seven-segment Decoder g c b a d e F ◼ Cathode seven-segment LED display ◼ active high 0 0 1 1 0 0 0 0 1 1 0